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Mathematics 4 Online
OpenStudy (calculusxy):

Radicals...

OpenStudy (calculusxy):

\[\large -6 \sqrt{160p^4}\]

OpenStudy (calculusxy):

steps: \[-6 \times \sqrt{160} \times \sqrt{p^4}\] \[-6 \times \sqrt{4 \times 40} \times p^2\] \[-6 \times \sqrt{2 \times 2 \times 2 \times 2 \times 2} \times p^2 \rightarrow -6 \times 4\sqrt{2} \times p^2 \rightarrow -24\sqrt{2p^2}\]

Nnesha (nnesha):

\[\huge\rm \sqrt{p^4}\] convert square root to an exponent form (1/2) \[\huge\rm (p^4)^{\frac{1}{2}}\] equal to p^2 no square root we already cancel that out

Nnesha (nnesha):

in other words p^4 is same as p^2 times p^2 \[\huge\rm \sqrt{p^4} \rightarrow \sqrt{p^2 *p^2} \rightarrow p*p\]

OpenStudy (calculusxy):

so am i not right?

OpenStudy (welshfella):

I dont understand your last line @calculusxy

OpenStudy (welshfella):

how does the square root of 160 become the square root of 32?

Nnesha (nnesha):

\[-6 \times \sqrt{4 *40} \times p^2\] this is correct take it from here factor 40 don't divide 4 into 2 times 2 4 is perfect square so just take the square root

OpenStudy (welshfella):

sqrt 160 = 4 sqrt10

Nnesha (nnesha):

if you are dividing 160 by 2 |dw:1445030594417:dw| make a group of 2

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