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# Solve x2 + 7x + 6 = 0 for x?

Solve x2 + 7x + 6 = 0 for x

### 5 Answers

- 1 decade agoFavorite Answer
this is factorable..

(x+1)(x+6)=0

and using the zero product rule, which says, A*B=0 if A=0 or B=0..

upon setting x+1 =0

and x+6=0

we get x=-1

and x= -6

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- 1 decade ago
x^2 + 7x + 6 = 0

(x + 1)(x + 6) = 0

(x + 1) = 0 or (x + 6) = 0

x = -1 x = -6

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- modulo_functionLv 71 decade ago
I presume that you mean x^2 for the first term.

It's a 2nd order polynomial and so has two solutions, not necessarily different.

I'd advise factoring rather than resorting to the lazy person's quadratic formula.

So, can you think of two numbers whose:

product is 6

and

sum is 7

?

(I'll wait.....)

So, those two numbers, r1 and r2, are the roots or solutions of the equation:

x^2+7x+6 = 0

(x-r1)*(x-r2) = 0

Ta da....

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- yupchageeLv 71 decade ago
x^2 + 7x + 6 = 0

(x+6)(x+1)=0

x+6=0

x=-6

x+1=0

x=-1

x=-6, -1

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- Anonymous1 decade ago
You need to factor the problem:

(x+6)(x+1)=0

x=-6 or -1

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