Question

From which expression must 2a^2 + 6a – 3 be subtracted to obtain a difference of a^2 + a + 1? A. 3a^2 + 7a – 2 B. 3a^2 – 7a – 2 C. 3a^2 – 7a + 2 D. 3a^2 + 7a + 2

Answer 1

Answer:

Step-by-step explanation:

Let X be subtracted from 3a

2

−6ab−3b

2

Then,

3a

2

−6ab−3b

2

−1−X=4a

2

−7ab−4b

2

+1

x=3a

2

−6ab−3b

2

−1−(4a

2

−7ab−4b

2

+1)

x=3a

2

−6ab−3b

2

−1−4a

2

+7ab+4b

2

−1

x=−a

2

+ab+b

2

−2

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