No.021
POINT
Example
①\(\ell\times5\times a\)
②\(c\times a\times1\)
③\(a\times2+\ell\)
④\(x\times x+y\times3\)
⑤\((x+y)\times5\)
⑥\(x+y\times5\)
① \(5a\ell\)
② \(ac\)
③ \(2a+\ell\)
④ \(x^2+3y\)
⑤ \(5(x+y)\)
⑥ \(x+5y\)
② \(ac\)
③ \(2a+\ell\)
④ \(x^2+3y\)
⑤ \(5(x+y)\)
⑥ \(x+5y\)
Try it yourself.
PRACTICE 01
\(x\times4\)
\(4x\)
PRACTICE 02
\(3\times a\times b\)
\(3ab\)
PRACTICE 03
\(y\times y\)
\(y^2\)
PRACTICE 04
\(2\times x\times x\)
\(2x^2\)
PRACTICE 05
\(a\times(-5)\)
\(-5a\)
PRACTICE 06
\(1\times m\times n\)
\(mn\)