numéro 113. help me please .

a)(5x-6)²  
b) (3x+7)
c)(x-(3/4))*(x+(3/4))
d)(1+4y)(1-4y)

bonsoir

a ) 36 - 60 x + 25 x² = ( 6 - 5 x)²

b) 9 x² + 42 x + 49 = ( 3 x + 7)²

c) x² - 9/16 = ( x - 3/4) ( x + 3/4)

d) 1 - 16 y² = ( 1 - 4 y) ( 1 + 4 y)