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sweet [91]
3 years ago
13

Evaluate 15 − 4 + (7 − 5)2 = __________.

Mathematics
2 answers:
Bumek [7]3 years ago
7 0
26? right? cause 15 - 4 is 11, 7 - 5 is 2, 11 + 2 is 13, and 13 x 2 is 26
blagie [28]3 years ago
6 0
15-4=11 plus
(7-5)= 2
if is times 2 is 32
if is plus 2 is 15
if is minus 2 is 11 
and if is divided by 2 is 6.5
 (I'm saying all that because you didn't put any symbol beside the number 2)
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The greatest common factor is the biggest number taken from the values.

Q1. The answer is <span>A. 5y^6
</span>
20 y^{9} +5 y^{6}= 4*5 y^{9}+5 y^{6}
Since x^{a}* x^{b}  =x^{a+b}, then x^{9}= x^{3}* x^{6}

Back to our expression:
4*5 y^{9}+5 y^{6}=4*5 y^{3}*y^{6}+5 y^{6}=4 y^{3}*5y ^{6}+  5y ^{6}*1=5 y^{6} (4y ^{3} +1)
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Q2. The answer is <span>D. 12xy^2
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12x y^{5}+60 x^{4} y^{2} -24 x^{3} y^{3}=12x y^{5}+5*12 x^{4} y^{2} -2*12 x^{3} y^{3}
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The greatest common factor is thus 12xy^{2}
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