Question

add:
$15 {}^{2} + 16m - 7,7m + 7 - 7m ^{2} and5 - 5m + 3m ^{2}$
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Answer 1

Answer:

$a+ b+c= 11m^ {2} + 18m + 5$

Step-by-step explanation:

Let say

$a = 15m^ {2} + 16m - 7$

$b = - 7m^ {2} + 7m +7$

and

$c = 3m^ {2} - 5m + 5$

we need to calculate a+b+c and we get

$a+ b+c= (15m^ {2} + 16m - 7) + ( - 7m^ {2} + 7m + 7) + (3m^ {2} - 5m + 5)$

$a+ b+c= (15 - 7 + 3)m^ {2} + (16 +7 - 5 )m + ( - 7 + 7 + 5)$

upon solving this further we get

$a+ b+c= 11m^ {2} + 18m + 5$

Answer 2

a+ b+c=11m2+18m+5a+b+c=11m2+18m+5