Please I can't figure it out and my homework is due tommorrow, everyone I've asked doesn't know how to do it? The faster the answers the better!! Thanx!
2007-07-27 12:11:56 · 9 answers · asked by Alysha D 1 in Science & Mathematics ➔ Mathematics
6x(x+7) =0 then x=0 or -7
2007-07-28 11:52:22 · answer #1 · answered by mramahmedmram 3 · 1⤊ 0⤋
The common factor is 6x:
6x(X+7) = 0
x+7 = 0/6x
x+7 = 0
x = - 7 THE ANSWER
Proof:
6x^2 + 42 x = 0
6(-7)^2 + 42(-7) = 0
6(49) - 42(7) = 0
294 - 294 = 0
0 = 0
2007-07-27 12:37:42 · answer #2 · answered by the lion and the bee 3 · 0⤊ 0⤋
Hey there!
Here's the answer.
6x^2+42x=0 --> Write the problem.
6x(x+7)=0 --> Factor out the GCF. The GCF of this equation is 6x.
6x=0 or x+7=0 --> Use the zero-product property i.e. if pq=0, then p=0 or q=0.
x=0 or x=-7 --> Solve each equation for x.
{-7,0} Write the solutions in the set.
So the solution is {-7,0} or x=-7 or x=0. I hope it was quick enough!
I hope it helps!
2007-07-27 12:17:26 · answer #3 · answered by ? 6 · 0⤊ 0⤋
This one is easy: Here we go:
6x^2+42x=0
Factor out 6x to get: 6x(x+7)=0
Now use the zero product property by putting 6x and x+7 equal to zero, as such:
6x=0
x+7=0
Solve each equation for x to get a solution set of: x=0, x=-7
Be sure to check your answer!
2007-07-27 12:30:34 · answer #4 · answered by edgehead_11071981 2 · 0⤊ 0⤋
6x^2+42x=0
so 6x(x+7)=0
so Either 6x=0 or x+7=0
so x=0 or x=-7 ans
2007-07-27 12:44:52 · answer #5 · answered by MAHAANIM07 4 · 0⤊ 0⤋
6x^2 + 42 x = 0
x(6x+42) = 0
x = 0
6x + 42 = 0
6x = -42
x = - 7
2007-07-27 12:22:50 · answer #6 · answered by robertonereo 4 · 0⤊ 0⤋
6x (x + 7) = 0
x = 0 , x = - 7
2007-07-27 22:22:22 · answer #7 · answered by Como 7 · 1⤊ 0⤋
6x^2+42x=0
6(x^2+7x)=0
x(x+7)=0
x=0, -7
2007-07-27 12:16:48 · answer #8 · answered by Kenneth H 3 · 0⤊ 0⤋
6x^2+42x=0
6x(x+7)=0
6x=0
x=0
or
x+7=0
x= -7
2007-07-27 12:22:49 · answer #9 · answered by Anonymous · 0⤊ 0⤋