Question

evaluate using suitable identities (X + 8)( x -9)​

Answer 1

Step-by-step explanation:

(x+8)(x-9)

=x*x+(8-9)x+8*(-9)

=X ka power 2-x-72

ans........

Answer 2

Answer:

Step-by-step explanation:

= x square + x(a+b) +ab                        [FORMULATION]

=  X square + x {8+(-9)} + 8*(-9)

= X square + (-x) + (-72)

= X square - x -72                                 [SOLVE]