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Mathematics 7 Online
OpenStudy (anonymous):

(y2)5

OpenStudy (anonymous):

i meant (y^2)^5

OpenStudy (anonymous):

can you help

geerky42 (geerky42):

Remember exponent rules? One of them is \(\Large (A^b)^c = A^{bc}\)

OpenStudy (anonymous):

oh so just times the exponents

OpenStudy (anonymous):

so y^10

geerky42 (geerky42):

Or you could rewrite \((y^2)^5 = (y^2)(y^2)(y^2)(y^2)(y^2)\) Yeah basically you multiple the exponents.

geerky42 (geerky42):

yeah. y^10

OpenStudy (anonymous):

okat thanks what about (y^2)(y^5)

geerky42 (geerky42):

\((y^2)^5 = (y^2)(y^2)(y^2)(y^2)(y^2) = y^{2+2+2+2+2} = y^{2\cdot 5} = y^{10}\) for second problem, another rule states that \(\Large A^bA^c = A^{b+c}\)

geerky42 (geerky42):

So just add the exponents.

geerky42 (geerky42):

You get it?

OpenStudy (anonymous):

was is expanded form

OpenStudy (anonymous):

what

OpenStudy (anonymous):

@geerky42

geerky42 (geerky42):

What do you mean?

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