Question

Find the square by using identies
(a) . (x+7)²
(b) . (a-11)²​

Answer 1

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Find the square by using identies

Find the square by using identies (a) (x+7)²

➜ x²+2(x)(7)+7²

x²+14x+49

(b) (a-11)²

➜ a²-2(a)(-11)+(-11)²

a²+22a-121

Answer 2

Answer:

(a) . (x+7)²

formula : (a+b)²=a²+2ab+b²

---->

(x+7)²

x²+2(x)(7)+(7)²

--->x²+14x+49

(b) . (a-11)²

formula : (a-b)²=a²-2ab+b²

---->

(a-11)²

a²-2(a)(11)+(11)²

--->a²-22a+121

Step-by-step explanation:

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