Question

Find the following squares using identity.
(1) (b-7)
(ii) (xy +3z)?
ii) (6m² - 5n)​

Answer 1

Answer:

1.(b-7)²

(a-b)²=a²-2ab+b²

b²-2×b×7+7²

b²-14b+49

2.(xy+3z)²

(a+b)²=a²+2ab+b²

(xy)²+2(x)(y)+(3z)²

x²y²+2xy+9z²

3.(6m²-5n)²

(a-b)²=a²-2ab+b²

(6m)²-2(6m²)(5n)+(5n)²

36m²-60m²n+25n²

please mark as brainliest answer.