No.111 Multiplying Monomials
POINT
Multiply the coefficients, then multiply the variables. Add exponents when multiplying the same variable.
Simplify the following expressions.
Example
\(-3x\times5y\times(-2x)\)
\(-\frac23xy\times\left(-\frac{15}{8}xz\right)\)
① \(30x^2y\)
② \(\frac54x^2yz\)
② \(\frac54x^2yz\)
Try it yourself.
Simplify the following expressions.
PRACTICE 01
\(2a\times(-3b)\times4a\)
\(-24a^2b\)
PRACTICE 02
\(-\frac34xy\times\frac89yz\)
\(-\frac23xy^2z\)
PRACTICE 03
\(4a\times(-2b)\times3a\)
\(-24a^2b\)
PRACTICE 04
\(-5xy\times2x\times(-3y)\)
\(30x^2y^2\)
PRACTICE 05
\(\frac23ab\times\left(-\frac94ac\right)\)
\(-\frac32a^2bc\)
PRACTICE 06
\(-\frac56x^2y\times\frac3{10}xy^2\)
\(-\frac14x^3y^3\)