Question

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Answer 1

a) x²-121 = ( x + 11 ) . ( x - 11 )

b) 81- q²+0 = ( 9 + q ) . ( 9 - q )

c) 4z²-25 = ( 2z + 5 ) . ( 2z - 5 )

d) 5x+5z = 5.( x+z)

e) ax²+ bx + cx = x.( ax + b +c )

f)  x+bx+xz+dz = x.( 1+b) + z.( c+d)

g) 5z²t + 10t - 3ab + 5b = 5t.( z² + 2) - b.( 3a + 5 )

h) bd + cd + d + cx + bx + x = d.( b + c + 1) + x.(c+b+1)

i) z² -  26z +169 = ( z - 13) ²

j) 4x² + 12x+ 9 = ( 2x+ 3) ²

k) 49x² -  56xy +  16y² =  ( 7x- 4y)²