Question

$(5a ^{2} + 6b^{2}) ^{2} =$
​

Answer 1

Answer:

[(5a²)²+(6b²)²]

25a⁴+36b⁴+60a²b²

Answer 2

Explanation:

If you multiply the coefficients of

a²

and

b²

you get

−30

. You need factors of

−30

which differ by

−1

, namely

−6

and 5 which allows you to rewrite the equation as:

−5a2−6ab+5ab+6b²

You can factorize both pairs separately to give you:

−a(5a+6b)+b(5a+6b)

which you collect as the answer above

Hope it helps you....