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OpenStudy (anonymous):
simplify x^3 times x^-5
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OpenStudy (anonymous):
Add the exponents.
OpenStudy (anonymous):
= x^3 + (-5) = x^-2 = 1/x^2
OpenStudy (saifoo.khan):
\[\Huge a^ b \times a^c = a^{b+c}\]
OpenStudy (anonymous):
3x^2 * -5x^-4
OpenStudy (saifoo.khan):
@maryamali , try posting the question on left pane! :)
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OpenStudy (saifoo.khan):
in*
OpenStudy (anonymous):
3*-5*x^2 + (-4) = -15x^-2 = -15/x^2
OpenStudy (anonymous):
hey harikat, i don't know if i'm wrong or you are, is it meant to be differentiated?
OpenStudy (saifoo.khan):
No, we have to multiply. \[\large (3 * -5) (x^2 * -x^4)\to (-15)(x^{-2})\to -\frac{15}{x^2}\]
OpenStudy (anonymous):
why differentiated????
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OpenStudy (anonymous):
don't you have to add the powers? so it would be -2?
OpenStudy (anonymous):
the solution is as I and saifoo have shown
OpenStudy (anonymous):
ok thanku
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