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London Rosario
Mathematics
18 July, 20:44
What is the product of (-a + 3) (a + 4) ?
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Jacqueline Gibson
18 July, 20:47
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Step-by-step explanation:
multiply the first bracket with the second
and get - a squared - 4a+3a+12
then we group like and unlike terms
so - 4a+3a = - a
our new equation will be - a (squared) - a+12=0
we equals to zero to remove negative signs and it will be
a squared + a-12
then we find the factors.
And our factors are 3a-4a
=a squared + 3a-4a-12=0
We factorise and answer will be
(a+3) (a-4) = 0
so a = - 3 or 4
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