shambrayperkins
25.09.2019 •
Mathematics
Are the expressions (4x)^2 and 4x^2 equal in value? how would you explain your answer?
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Ответ:
parenthasees
exponenets
multiiplication or dividsion
additon or subtraction
(4x)^2=4x times 4x
4x^2=4 times x times x=4(x^2)
(4x)^2=16x^2
4x^2=4(x^2)
values are not equal
(just for fun: 4x^2=(2x)^2)
Ответ:
a+a+2a+2a=180
6a=180
a=30
3x-12=x
2x=12
x=6
8-y=x
8-y=6
y=2