First we will compute the h+k and then multiply the result by 2.
To add polynomials, we add terms whose variables are alike, for example:
we add the coefficients of x^2 together, the coefficients of x together and so on.
Therefore:
h + k = x^2 + 1 + x - 2 = x^2+x-1
Now, we will multiply this answer by 2 to get the final answer:
2(h+k) = 2(x^2+x-1) = 2x^2 + 2x -2
21 I think cause you use pemdas
Answer: H. 139.50
Step-by-step explanation:
Multiply 9 by 8 first and you get 72. Then multiply 9 by 7.5 and you get 67.5 then add 72 and 67.5 and you get 139.5 or 139.50
Distribution method
(2x+6)(2x-6)
=4x^2-12x+12x-36
=4x^2-36
Answer:
m=-7
Step-by-step explanation:
4+4+20m=-132
8+20m=-132
20m=-132-8
20m=-140
m=-7
