Question

find the two root

by using quadratic formula ​

Answer 1

Answer:

step by step

1. 9×2-9(a+b)x+(2a²+5ab+2b²) =0

Explations

bi quadratic formula

9 (a + b) +√81 (a+b)²-4(9)(2a²+5ab+2b²-)/2(9)

resolving d

81(a+b)2-4(9)(2a²+5ab+2b²)

81(a²+b²+2ab)-36(2a²+5ab+26²)

81a²+81b²+162ab-72a²-180ab-726²

9a²+9b²-18ab-[3(a+b)]²

D=[3(a+b)²;√

D=3(a+b)