HAYAWOY
Answered

Factorisation
1.(10x + 7)×(9x + 2) + 10x + 7
2.(8x - 1) × (8x - 6) + 8x - 1​

Sagot :

VINS

bonsoir

( 10 x + 7 )  ( 9 x + 2 ) +  1 ( 10 x + 7 )

= ( 10 x + 7 ) ( 9 x + 2 + 1 )

= ( 10 x + 7 ) ( 9 x + 3 )

= 3 ( 10 x + 7 ) ( 3 x + 1 )

( 8 x - 1 ) ( 8 x - 6 ) + 1 ( 8 x - 1 )

= ( 8 x - 1 ) ( 8 x - 6 + 1 )

= ( 8 x - 1 ) ( 8 x - 5 )