Need help with binomials?

Question

how would you factor x(squared)-7x+12=0? what would x be?

Answer 1

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first since you have x^2 start out with:
(x )(x )

then put the signs in since the first sign is - put a - first then since the second sign is a + you know the signs will be the same so you get:

(x- )(x- )
now try to figure out what two numbers will multiply to equal 12 and add together to give you 7 and you get 3 and 4 so:

(x-3)(x-4)

to find x set both of these terms equal to zero so
(x-3)=0
(x-4)=0

then you get x=3 and x=4

Source(s):

AP Calculus student

Answer 2

factoring is impossible, just took a test today

x^2-7x+12=0

first, you need to see what adds to -7, and multiplies to +12
to do this, you need all the factors of 12, they are
1, 12
2, 6
3, 4

next, since they add to a negitive number, but multiply to a POSITIVE number, both are negitive, since a negitive times a negitive = a positive

so think
which of those factors will make -7?

answer is 4, 3

so you'd get
(x-4)(x-3)

then set each equal to zero
x-4=0 x-3=0
x=4 x=3

x=4 or x=3

Answer 3

(x - 4)(x - 3) = 0

so x - 4 = 0; x = 4 or x - 3 = 0; x = 3

Answer 4

(x-3)(x-4)
X = 3, or 4.

Answer 5

just do it