faithg3263 faithg3263
  • 02-08-2020
  • Mathematics
contestada

factor the equation x2-2x-15=0

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Chegsnut36
Chegsnut36 Chegsnut36
  • 02-08-2020

Answer:

(x + 3)(x - 5)

Step-by-step explanation:

Well to factor  x^2-2x-15,

we need to find 2 numbers that multiply to get -15 and add to get -2.

3*-5 = -15

3x + -5x = -2x

x*x = x^2

Factored (x + 3)(x - 5)

Hope this helps :)

Answer Link
Appattuvilai99
Appattuvilai99 Appattuvilai99
  • 02-08-2020

Answer:

(x - 5)(x + 3)

Step-by-step explanation:

Step 1- Find 2 number that multiplies to be -15, but also add to be -2

This would be -5 and 3

-5 * 3 = -15

-5 + 3 = -2

Step 2- write the equation

The equation can be written 2 different ways

1st way- (x - 5)(x + 3)

2nd way- (x + 3)(x - 5)  

Answer Link

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