Write the value of -25 -9. - Vidyadip

Question

Write the value of $\sqrt{-25}\times\sqrt{-9}.$

✓

Answer

$\sqrt{-25}\times\sqrt{-9}=5\sqrt{-1}\times3\sqrt{-1}$
$=5\text{i}\times3\text{i}$
$=15\text{i}^2$
$=-15$
Hence, $\sqrt{-25}\times\sqrt{-9}=-15.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Solve the following Question.(1 Marks)" from Complex Numbers→Complex Numbers — all question types→Maths STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Rewrite the following statements in the form "p if and only if q".
q: If a quadrilateral is equiangular, then it is a rectangle and if a quadrilateral is a rectangle, then it is equiangular.

State the signs of : 468°

Find the radian measure corresponding to the following degree measures:
35°

State, first three terms in the expansion of $(5+4 x)^{-1 / 2}$

In a $\triangle\text{ABC},$ if $\cos\text{A}=\frac{\sin\text{B}}{2\sin\text{C}'}$ then show that c = a.

The given set is the example of an empty set or not?
{$x : x^2- 2 = 0$ and $x$ is rational}

Show that the statement:
p: "If $x$ is a real number such that $x^3 + x = 0$, then $x$ is $0"$ is true by.
Method of contradition.

Check if the following functions have an inverse function. If yes, find the inverse function.

$f(x)=8$

Find the domain of the following functions.

$f(x)=x$ !

Express the following numbers in the form x + iy:

$[$ latex $] e^{\frac{5 \pi}{6} i}[/$ latex $]$