Solve. x^2 + x – 30 = 0?

Answer 1

(x+6)(x-5)=0

x = -6 or 5

Answer 2

Hey there!

Here's the answer.

x^2+x-30=0 --> Write the problem.
x^2+6x-5x-30=0 --> Rewrite x as 6x-5x.
x(x+6)-5(x+6)=0 --> Factor x out of x^2+6x and factor -5 out of -5x-30.
(x-5)(x+6)=0 --> Factor out x+6.
x-5=0 or x+6=0 --> Apply the property if pq=0, then p=0 or q=0.
x=5 or x=-6 --> Solve each equation for x.
{-6,5} Write the solutions in the set.

So the solutions are x=5 or x=-6.

Hope it helps!

Answer 3

x = -6 or 5

Answer 4

X=5
or
X=-6

Answer 5

x2 +x -30=0;
this one's easy:
we split up the second term to get factors, let's see how it is done:
x2 + (6x-5x) -30=0;
x2+6x -(5x+30)=0; [ i took out the common negative sign]

x(x+6)- 5(x+6)=0;[ taking x common from first two terms & 5 common from last two terms.]

this gives (x-5)(x+6)=0;

so as you can see product of two terms is 0 if either one of them is zero. this means:

either (x-5)=0, x=5;

or(x+6)=0, x=-6;

Answer 6

x=5

5^2 + 5 - 30
25 + 5 - 30
30 - 30
0

Answer 7

(x+6)(x-5)
answer is x= -6 or x =5 both solutions work check it and see

Answer 8

(x + 6) (x - 5) = 0
x = - 6 , x = 5

Answer 9

(-b+/-sqr(b^2-4ac))/2a
quadratic formula
(x+6)(x-5)=0

X=-6 or 5