3 years ago

What are the factors of the expression x^2+x-20?

Mathematics

1 answer:

tatyana61 [14]3 years ago

3 0

Answer:

(x-4)(x+5)

Step-by-step explanation:

Find 2 numbers knowing sum (1) and product (-20). To find them, factor pairs of (-20) --> (-2,10) (-4,5). This sum is 1=b. Then, these 2 numbers are: - 4 and 5. Y=(x-4) (x+5). Hope this helped :)

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Read 2 more answers

Solve the system of equations using multiplication. 3x – 3y = –3 5x – y = –13 What is the solution of the system?

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ANSWER

The solution is

x=-3,y=-2

EXPLANATION

First equation

3x – 3y = –3

Second Equation: