If a + b 10 and ab 21 find the value of a3+b3
WebIf a + b = 10 and ab = 21, find the value of a 3 + b 3. Solution: a + b = 10, ab = 21 Cubing both sides, (a + b) 3 = (10) 3 ⇒ a 3 + 6 3 + 3ab (a + b) = 1000 ⇒ a 3 + b 3 + 3 x 21 x 10 = 1000 ⇒ a 3 + b 3 + 630 = 1000 ⇒ a 3 + b 3 = 1000 – 630 = 370 ∴ a 3 + b 3 = 370 Question 3. If a – b = 4 and ab = 21, find the value of a 3 -b 3. Solution: WebAnswer (1 of 11): a/b+b/a=1 , multiply both side by ab a^2+b^2=ab a^2+b^2-ab=0………….(1) a^3+b^3=(a+b)(a^2+b^2-ab) ,put a^2+b^2-ab=0 from eq.(1) …
If a + b 10 and ab 21 find the value of a3+b3
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WebIf a+b = 10 and ab = 21, find the value of a3+b3 View answer If, in general, the value of sin A is known but the value of A is not known, then how many values of tan can be calculated? View answer The mean and standard deviation of … WebIt is given that a−b=3 and ab=10, therefore, (a−b) 3=a 3−b 3−3ab(a−b) ⇒(3) 3=a 3−b 3−(3×10)(3) ⇒27=a 3−b 3−(30×3) ⇒27=a 3−b 3−90 ⇒a 3−b 3=27+90 ⇒a 3−b 3=117.
WebAnswer (1 of 50): You can solve these type of questions pretty easily using this method: ELIMINATION You can apply this in two ways: Addition or Subtraction When you have … Web24 feb. 2024 · Complete step-by-step answer: Given that a + b = 10 and a b = 21 We have to find a 3 + b 3 As we know that ( a + b) 3 = a 3 + b 3 + 3 a b ( a + b) Now we will be …
WebAnswer (1 of 3): Hi, take the equation from question and name it. A+b=3 (equation 1). A-b=1(equation 2). Add above both equation. +b &-b will be cut. So,2a=4 A=2 ,put value of … Web19 aug. 2024 · Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site
WebIf a+b=10 and ab=21, find the value of a 3+b 3. Medium Solution Verified by Toppr Correct option is A) Given, a+b=10,ab=21 then, ⇒(a+b) 3=a 3+3ab(a+b)+b 3 ⇒(10) 3=a 3+b …
Web16 apr. 2024 · If a + b = 10 and ab = 21, find the value of a3 + b3. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students … gate creek cabins petersvilleWebwhy create a profile on Shaalaa.com? 1. Inform you about time table of exam. 2. Inform you about new question papers. 3. New video tutorials information. davie county blogWeb3 apr. 2024 · a 3 + b 3 = (a + b) (a 2 + b 2 – ab) Calculation: (a/b) + (b/a) = 1 ⇒ (a 2 + b 2 )/ (ab) = 1 ⇒ (a 2 + b 2) = ab ---- (i) a 3 + b 3 = (a + b) (a 2 + b 2 – ab) Putting the value of … gate creekWebGiven: a3 + b3 = 28; ab = 3 Concept Used: In this type of question, value of a + b can be calculated by using below formula Formula Used: (a + b)3 = a3 + b3 + Get Started. … gate creek ranchhttp://ia-petabox.archive.org/download/medicaidqualityc00unit_1/medicaidqualityc00unit_1.mobi davie county baseball facilityWebSolution For If a+b=10 and ab=21 , find the value of a3+b3. Solution For If a+b=10 and ab=21 , find the value of a3+b3. The world’s only live instant tutoring platform. About Us … gate creek ranch oregonWeb9 jun. 2024 · GIVEN: a - b = 4 ab = 21 find the value of a ³-b³ Putting the value in the formula> (a-b)³ = a³- b³ - 3ab(a-b) (4)³ = a³- b³ - 3(21)(4) 64 = a³- b³ - 252 64 + 252 = a³- … davie county building codes