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multiply -7 (2a square minus 4) how do i work the problem? Answered

im doing basic concepts in algebra and i need to how to solve this pronlem

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To do as Kiteman advised you, this is your answer:
-7(2a2-4)
is
-14a2+28

L

Its a style thing, but I don't like hanging minus signs, so I always write
28-14a2

I'd prefer that too, but I was doing a "literal" there.

L

Orksecurity has it almost right.  The =word you need to know is associativity.  Here's a hint:  a × (b + c) = a×b + a×c. 

For this specific example, multiply each thing inside the brackets by each thing outside the brackets.

Beware of your signs.

Transitivity and commutivity.  Think about how you might do it if a was a specific number but you weren't allowed to subtract 4 before doing the multiplication.