Pls answer the question no 20 Q 20 If a - b = 4, ab = 45 find a3-b3 - Maths - Polynomials

Question

Pls answer the question no 20
Q 20 If a - b = 4, ab = 45 find a 3 - b 3

Varun Rawat · Accepted Answer

a - b = 4⇒a - b2 = 16⇒a2 + b2 - 2ab = 16⇒a2 + b2 - 2 × 45 = 16⇒a2 + b2 = 106Now, a3 - b3 = a-ba2 + b2 + ab = 4106+45 = 604

Pls answer the question no.20 Q.20. If a - b = 4, ab = 45 find a 3 - b 3