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Free_Kalibri [48]
3 years ago
7

Factorise: a^2 + 8a - 20

Mathematics
2 answers:
REY [17]3 years ago
6 0
Which two numbers add up to <span>88</span><span> and multiply to </span><span>−20?
</span><span>−2</span><span> and </span><span>10
</span>
Rewrite the expression using the above:

Answer:
(a−2)(a+10)<span>
</span>
amm18123 years ago
6 0
You would use the quadratic formula or graph it to find your factors. Your factors are: 

(x+10)(x-2) 
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