Question

(iv) (x + 7)(x +9) = (x + 3)(x + 21)​

Answer 1

Answer:

=x²+16x+63=x²+24x+63

=x²-x²+16x-24x=63-63

= - 8x=0

=x= - 0/8

=x=0

Answer 2

(x+7)(x+9)=(x+3)(x+21)

on solving:

x^2+9x+7x+63=x^2+21x+3x+63

x^2+16x+63-x^2-24x-63=0

-8x=0

x=0

hopes helps you dear friend

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