3 years ago

If a= -5, what is the value of a^2-4/a+2

Mathematics

1 answer:

Luda [366]3 years ago

5 0

Answer:

-7

Step-by-step explanation: When a= 5, let's substitute all a's with 5 in the expression:

$\frac{a^{2}-4 }{a+2}\\\frac{(-5)^{2}-4 }{-5+2}\\\\\frac{25-4}{-3}\\\frac{21}{-3} \\= -7$

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We have to write a simplified form of the given expression $\sqrt{10000x^{64}}$

Consider the given expression $\sqrt{10000x^{64}}$

$\mathrm{Apply\:radical\:rule\:}\sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b},\:\quad \mathrm{\:assuming\:}a\ge 0,\:b\ge 0$

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