simplify - (-1/2×5)²
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Answered by
7
Answer:
-(-1/2×25)
=-(-25/2)
=25/2
=12.5
follow thanks me
Answered by
3
Answer:
1) (x+2)³
using,
(a+b)³=a³+3a²b+3ab²+b³
(x+2)³=x³+3(x)²(2)+3(x)(2)²+(2)³
=x³+6x²+12x+8
2) (x-2)³
using,
(a-b)³=a³-3a²b+3ab²-b³
(x-2)³=x³-3(x)²(2)+3(x)(2)²-(2)³
=x³-6x²+12x-8
3) x³-(2)³
using,
a³-b³=(a-b)³+3a²b-3ab²
x³-2³=(x-2)³+3(x)²(2)-3(x)(2)²
=(x-2)³+6x²-12x
4) x³+2³
using,
a³+b³=(a+b)³-3a²b-3ab²
x³+2³=(x+2)³-3(x)²(2)-3(x)(2)²
=(x+2)³-6x²-12x
hope it helps you....
Explanation:
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