Question

(2x+1)(x+5)=-3

Answer 1

2x^2+11x+8

Answer 2

Set 2x-1 = -3 and solve
Set x+5 = -3 and solve

Answer 3

i.e. you have two answers.

Answer 4

hi raheen long time no see you

Answer 5

(2x+1)(x+8)=0 ===> x=-1/2 or x=-8

Answer 6

hi noras, I keep facing lag in this website. thank you.

Answer 7

But I think I have to use the quadratic formula

Answer 8

Does the problem tell you to use the Quadratic Formula?

Answer 9

yes .

Answer 10

Start with the quadratic formula. x = (-b + - (sqrt b^2 - 4ac) )/2a
See that the standard form of a Quadratic Equation is ax^2 + bx + c
Using pattern matching, substitute the values from your problem into the Quadratic Formula based on the standard form (take 2 and substitute for a in the Quadratic Formula, and so on).

Answer 11

That means sqrt of the whole expression b^2 - 4ac but I left out a parenthesis that would have made that clear...

Answer 12

yes use the quadratic formula
2x^2+11x+8
a = 2 b= 11 and c=8
after that insert to the quadratic formula so you have two roots
positive roots and negative roots