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3 years ago

Which expression is equal to x−4x−7+x2−2x+3x−7 ?

Mathematics

2 answers:

Ksju [112]3 years ago

7 0

Answer:

It's the first one.

Step-by-step explanation:

Collect like terms.

x-4+x^2-2x+3

---------------------------

x-7

take x and (-2x): this equals -x

Take (-4) and 3: this equals (-1)

reorder the terms

-x-1+x^2

------------

x-7

Use the commutative property

x^2-x-1

------------

x-7

LiRa [457]3 years ago

3 0

The answer is the first one

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