Question

Solve: (x - 8)(x + 11) = 0.
A: {8, -11}


B: {-8, 11}


C: {0, 11/8}


D: no solution

Answer 1

This should have two solutions....right?

Answer 2

the question is just A B C or D it doesnt have an option to pick more than one

Answer 3

But one of the answers given is one of the solutions. Anyways...what you want to do is pick a number for x in the first parentheses to make the inside of the parentheses zero.

Answer 4

(x-8)
what number can we pick for x to make the inside zero?

Answer 5

8

Answer 6

Great that's pretty much all you have to do.

Find the answer where x=8
or in other words

(8,?)

Answer 7

wow that wasnt that hard

Answer 8

I put a ? because we don't know what y is and we don't have to exactly because we know that x= 8

Answer 9

Well this is a special case. So we can't always use this method

Answer 10

Solve: (x - 8)(x + 11) = 0.
(Points : 1)

{8, -11}


{-8, 11}


{0, 11/8}


no solution

Answer 11

Because the left side equals zero. And we have two parentheses multiplying we can easily find the answer by making the insides of the paraentheses zero

Answer 12

Solve the equation (4x + 1)(3x - 2) = 0
(Points : 1)

{-4, 1.5}


{-1/4, 2/3}


{1/4, 2/3}


{-4, 3}

Answer 13

what about this

Answer 14

same method?

Answer 15

well look at it this way we want the inside of a parentheses to be zero

(4x + 1)(3x - 2)

Because if we have

(0)*(3x - 2) =0
since anything we multiply with zero is zero.
And we want the left side to be equal to zero.

Answer 16

So yeah use the same method.

Answer 17

We want

4x + 1=0

Answer 18

Now solve for x

Answer 19

ok thanks