factorise the expressions -5x^2-15+5
Answers
Answered by
1
Answer:
15
Step-by-step explanation:
-5^2-15+5
= 25 - 15 + 5
= 30 - 15
= 15
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Answered by
0
Answer:
5(x'2-3+1)
Step-by-step explanation:
5 is common for al this
-5x'2/5=x'2
-15/5=-3
5/5=1
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