Question

Expand
(i) ( 2x – 3)^2

(ii) (x-7)(x+7)

(iii) 4x^2 – 25​

Answer 1

a ) ( 2x - 3 ) ²

4x² - 12x + 9

b ) ( x - 7 ) ( x + 7 )

x² - 7²

x² - 49

c ) 4x² - 25

( 2x - 5 ) ( 2x + 5 )

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