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Jet001 [13]
3 years ago
8

Can someone help me with factoring by grouping

Mathematics
2 answers:
Helga [31]3 years ago
8 0

Answer:

(x-2)(x+5)

Step-by-step explanation:

idk how to explain but..

First find two factors that make x^2 which is x and x: (x ?)(x ?)

Then because the last number is (-)10, you now know that there is a positive and negative symbol: (x + ?)(x-?)

Lastly, you have to find two factors of 10 that when subtracted equal to positive 3. A +5 and -2 when multiplied will equal to -10, and when subtracted will make +3. Then you can use the FOIL method to double check. im sorry.. ive never done this before lolol

when foiled: x^2 + 5x -2x - 10; x^2+3x-10

Wittaler [7]3 years ago
6 0

Factor : x^2+3x-10

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

Explanation:

Y = x^2 + 3x - 10.

Find 2 numbers knowing sum (3) and product (-10).

Factor pairs of (-10) -> (-1, 10)(-2, 5). This sum is 3 = b. The 2 numbers are: -2 and 5.

y = (x - 2)(x + 5).

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