Question

(x+7)(x-1) Perform multiplication of following algebric expressions using appropriate identities.​

Answer 1

Answer:

(x + 7)(x - 1)

= (x)^2 + [7 + (-1) ] × x + (7)(-1)

= x^2 + [7-1] × x - 7

= x^2 + 6x - 7

This is your final answer by using the identity of

= (x+a) (x+b)

= x^2 + (a + b) × x + (a) (b)

Answer 2

(x+7)(x-1)

applaying the distribute property by multiplying each term of x+7 by each term of x+1

x(x-1) +7(x-1)

= x²- x+7x-7

combine -x and 7x to get 6x

x²+6x-7

answer is x²+6x-7