Question

solve 2x^2+12x=-18

Answer 1

first off add 18 to toehr side, then divide by 2

Answer 2

other*

Answer 3

then factor out wats in the middle.

Answer 4

2(x^2+6x+9)=0

Answer 5

2(x+3)(x+3)=0

Answer 6

therefore x = -3

Answer 7

hope that helps.

Answer 8

These with non-trivial coefficients are kind of tricky. Rewriting it a comfortable form:

2x^2 + 12x + 18

We can factor a 2 out.

2(x^2 + 6x + 9)

Which we can factor into

2(x + 3)(x + 3)

So we have two real roots of -3.

Answer 9

so (-3,3) ?

Answer 10

Nope, just two of -3.

Answer 11

ok thank you