Evaluate
-40
Factor
-40
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\sqrt{5}\left(-4\right)\sqrt{5}\sqrt{4}
Factor 20=5\times 4. Rewrite the square root of the product \sqrt{5\times 4} as the product of square roots \sqrt{5}\sqrt{4}.
5\left(-4\right)\sqrt{4}
Multiply \sqrt{5} and \sqrt{5} to get 5.
-20\sqrt{4}
Multiply 5 and -4 to get -20.
-20\times 2
Calculate the square root of 4 and get 2.
-40
Multiply -20 and 2 to get -40.
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\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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