TBQ - Expand using identity - I — task. Maths CBSE Live product, Class 9 (2026-27).

Using the identity \((a + b)^2 = a^2 + 2ab + b^2\), expand the following:

(i) \((x + 3y)^2\) \(=\)

i^{i} + i i y + i y^{i}

(ii) \(\left(\frac{9}{7} x + \frac{5}{2} y\right)^2\) \(=\)

\frac{i}{i} i^{i} + \frac{i}{i} i y + \frac{i}{i} y^{i}

[Note: Enter the simplest fraction. Also, insert the numbers and variable in separate box.]

Did you find an error?

5. TBQ - Expand using identity - I