Simplify (21m^2)(-15m^2)

Math
(21m2)(-15m2)
Rewrite using the commutative property of multiplication.
21⋅-15(m2m2)
Multiply m2 by m2 by adding the exponents.
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Use the power rule aman=am+n to combine exponents.
21⋅-15m2+2
Add 2 and 2.
21⋅-15m4
21⋅-15m4
Multiply 21 by -15.
-315m4
Simplify (21m^2)(-15m^2)

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