Simplify 5 - ( x - 3) + 4x
Simplify -3(x + 3) - 2(x + 4)
i'm not sure how to do these questions. I already know the answer. (its all in the back of the book) I'm just not understanding HOW to do it and how to also apply it to other problems that are similar to these. The book explains very little and then adds in different things and i'm just confused. Please please please give a step by step. thank you

i think c. but don't trust it.

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

i think its doubled. let me know

step-by-step explanation: