Question

(x+7)(x+4) ..... Please Help

Answer 1

x^2 + 11 x + 28

Explanation:

Expand the following:

(x + 4) (x + 7)

(x + 4) (x + 7) = (x) (x) + (x) (7) + (4) (x) + (4) (7):

x x + 7 x + 4 x + 4 7

x x = x^2:

x^2 + 7 x + 4 x + 4 7

4×7 = 28:

x^2 + 7 x + 4 x + 28

7 x + 4 x = 11 x:

Answer: x^2 + 11 x + 28

Answer 2

Multiply each term in each set of parentheses by each one:

X * x = x^2

X * 4 = 4x

7 * x = 7x

7 * 4 = 28

Combine to get x^2 + 11x + 28