Question
Find following products:
$ \left(x^2+7\right)\left(x^2+7\right) $
$ \left(x^2+7\right)\left(x^2+7\right) $
✓
Answer
$ \left(x^2+7\right)\left(x^2+7\right) $
$=\left(x^2+7\right)^2 $
$=\left(x^2\right)^2+7^2+2 \times x^2 \times 7 $
$ =x^4+49+14 x^2 $
$=\left(x^2+7\right)^2 $
$=\left(x^2\right)^2+7^2+2 \times x^2 \times 7 $
$ =x^4+49+14 x^2 $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Find the following products:
$\frac{-2}{3}\times\frac{6}{7}$
→$\frac{-2}{3}\times\frac{6}{7}$
$\underline{\ \ \ \ \ \text{A}\ \ 0 \ \ 1\ \ \text{B}\\\text{+}\ \ 1\ \ 0 \ \ \text{A}\ \ \ \text{B}}\\\underline{\ \ \ \ \text{B}\ \ \ 1\ \ \ 0\ \ \ 8}$
→Deepti went to school for $216$ days in a full year. If her attendance is $90\%$ find the number of days on which the school was opened$?$
→Expand the following, using suitable identities.
$ \left(a^2+b^2\right)^2 $
→$ \left(a^2+b^2\right)^2 $
Write the greatest common factor in each of the following terms.
$-18a^2, 108a$
→$-18a^2, 108a$
Can $22^\circ$ be an interior angle of a regular polygon? Why?
→Carry out the multiplication of the expressions in each of the following pairs
$a^2-9,4 a$
→$a^2-9,4 a$
Using suitable identities, evaluate the following.
$(1005)^2$
→$(1005)^2$
Identify which symbol should appear in each sector.
Evaluate: $(-6)^{-1}$
→