Answer:
690.1
Step-by-step explanation:
13.4 x 10.3 x 5
5 + (-3) - 6
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Let's do the first part
5 + (-3) whenever you see a problem where you add a negative number just think of it as subtracting
5 - 3 = 2
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2 - 6 = -4
-4 is your answer
I'm guessing you mean a^2? if so then,
a^2+28a+27=
(a+1)(a+27)
Diamonds are much less abundant (common) compared to water
