1.Simplify ( x +1)(x- 1) + 2x ² 2. Simplify (x + 2)(x - 1) -2(x + 1)
3. If 45 is added to a certain number and the result is divided by 9 ,the quotient is 8. What is the number?

Please help

Step-by-step explanation:

1)

(x*1) * (x-1) + 2 = =

2)

(x+2) * (x-1) - 2 * (x+1) =

3)

27

step-by-step explanation:

step-by-step explanation:

a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 2 times the age of the child?

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this needs to be the answer format, or else your answer is incomplete.

if the number of years is x, then the equation is

in __ years