Solve: (3-11 ) (3+11 ). - Vidyadip

Question

Solve: $\big(3-\sqrt{11}\big)\big(3+\sqrt{11}\big).$

✓

Answer

$\big(3-\sqrt{11}\big)\big(3+\sqrt{11}\big)$$=3^2-\big(\sqrt{11}\big)^2$
$=9-11$
$=-2$

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 "1 Mark Question" from Number System→Number System — all question types→Maths STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

Classify the following number as rational or irrational. give reasons to support your answer.$\sqrt{\frac{3}{81}}$

For the following numbers write the ratio of first number to second number in the reduced form : 21,48

Examine, whether the following numbers are rational or irrational:$\sqrt{5}-2$

Represent the following rational numbers on the number line:$-2.4$

Write the complement of the following angles:
20°

Examine, whether the following numbers are rational or irrational:$\sqrt{3}+\sqrt{5}$

Examine, whether the following numbers are rational or irrational:$\big(2-\sqrt{2}\big)\big(2+\sqrt{2}\big)$

The number $\frac{665}{625}$ will terminate after how many decimal places?

Express the following percentages as ratios : 0.64%

Find the zero of the polynomial:
f(x) = 3x + 1