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hram777 [196]
3 years ago
10

What is the value of --21 – (--10)? a. - 31 b. - 11 c. - 10 d. 31 e. 1\

Mathematics
1 answer:
Alexandra [31]3 years ago
7 0
E. 11 or b. -11somebody just helped me and they said its really 11 cause they gone try to trick us. but the other person was saying -11 because it has negative sign in the equation.

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Answer:

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This polynomial can be factored by factoring pairs of terms.

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<em>Additional comment</em>

The answer choices suggest we're not interested in irrational or complex factors. The quadratic (4x² +7) could be factored into linear terms involving irrational complex numbers. The form for "difference of squares" would be used for the purpose.

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Step-by-step explanation:

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