Question

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Answer 1

Answer:

(x+4)(x+10)

using itdentity (x+a)(x+b) = x²+ (a+b)x + ab

= x²+(4+10)x+(4*10)

=x²+14x+40

(x+8)(x-10)

using itdentity (x+a)(x-b) = x²+(a-b)x-ab

= x²+(8-10)x-(8*10)

= x²-2x-80

(3-2x)(3+2x)

using itdentity (x+a)(x-a) = x²-a²

= (3)²-(2x)²

=9-4x²

hope it helps.