Find the product 1/2m² × (-1/2)n
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Answer:
Using the formula (a+b)(a−b) = a
2
−b
2
So (
2
1
m−
3
1
)(
2
1
m+
3
1
) = (
2
1
m)
2
−(
3
1
)
2
= (
4
1
m
2
−
9
1
)
Now we have (
4
1
m
2
−
9
1
)(
4
1
m
2
+
9
1
) =(
4
1
m
2
)
2
−(
9
1
)
2
So =
16
1
m
4
−
81
1
The answer is
16
1
m
4
−
81
1
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