Question

* multiply the following using appropriate identidies *





1...( x+7) ( x+7)

2...(3x + 1) (3x -8)

please answer

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Answer 1

Answer:

(x+7) (x+7)

(x+7)²

Identity (x+y)²=x²+y²+2xy

x²+(7)² +2(x)(7)

x²+49+14x

x²+14x+49

Answer 2

Answer:

1.

(X+7)(X+7)=(X+7)²

Using identity: (a+b)²=a²+b²+2ab

(x+7)²= x²+49+14x

2.

(3x+1)(3x-8)

Using (x+a)(x-b)=x²+(a+b)x+ab

(3x+1)(3x-8)= (3x)²+[1+(-8)]*3x + 1(-8)

= 3x²+-24x-8

hope you find my answer helpful

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