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2 years ago

If A = 2x - 722 + 3 and B = 4x2 - 12x, what is A + B?

Mathematics

2 answers:

hjlf2 years ago

8 0

Answer:

12x+4x-7y+45b+78a-44b+1a+1z+0d+1.1a+1.1a+2+2+2

Gennadij [26K]2 years ago

7 0

Answer:

Step-by-step explanation:

Combine like terms. Like terms have same variable with same power.

2x & (-12x) are like terms and

-7x² & 4x² are like terms

A = 2x - 7x² + 3

B = 4x² - 12x

A + B = 2x - 7x² + 3 + 4x² - 12x

= 2x - 12x - 7x² + 4x² + 3

= (2-12)x + (-7 + 4)x² + 3

= -10x + (-3x²) + 3

= -3x² - 10x +3

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