Question

4x2 = 12x + 40 can you please show me how to do this?

Answer 1

Best way,

4x2 = 12x + 40

4x^2 - 12x - 40 = 0

Get rid of 4 by taking commons,

4(x^2 -3x - 10) = 0

Divide 4 on both sides, you are left with....

Answer 2

(x^2 -3x - 10) = 0

Answer 3

can i factor this?

Answer 4

Now factor,

x^2 - 3x -10 =0

x^2 -5x + 2x - 10 = 0

take commons,

x(x-5) +2(x-5) = 0

(x+2)(x-5) = 0

Answer 5

Finally, solve them for Zero,

x = -2

x = 5

Answer 6

thanks =D

Answer 7

No problem!! :)

Answer 8

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Answer 9

hit the tofu for good luck!

Answer 10

LOL.