Question

use suitable identities to find the following products i) (x+4) (x+10) ii) (x+8) (x-10) iii) (3x+4) (3x-5)

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Answer 1

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Answer 2

Answer:

hey mate

a) (x+4) (x+10)= x² +(4+10)x + 4×10

= x² + 14x + 40

b) (x+8) (x-10)= x² + (8+(-10))x + 8×-10

= x² -2x - 80

c) (3x+4)(3x-5)=(3x)²+(4+(-5))3x+ 4×-5

= 9x² -3x -20

using identity

( x+a) (x+b) = x²+ (a+b)x + ab

hope it will help you