Download App

Algebraic Identities — Maths STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9MathsAlgebraic Identities2 Marks
Question
Evaluate the following using identities:
$(0.98)^2$
✓

Answer

We have,
$(0.98)^2=(1-0.02)^2$
$=(1)^2+(0.02)^2-2 \times 1 \times 0.02$
$=1+0.0004-0.04[\text { Where, } a=1 \text { and } b=0.02]$
$=1.0004-0.04$
$=0.9604$
Therefore, $(0.98)^2=0.96041$

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 "2 Mark Question" from Algebraic Identities→Algebraic Identities — all question types→Maths STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

If $10^x=64$, find the value of $10^{\left(\frac{x}{2}+1\right)}$.
→
Factorise:
$x^4 y^4-x y$
→
Factorise:
$2 x^2-7 x-15$
→
Factorise:
$18 x^2+3 x-10$
→
Define the following terms:
Collinear points.
→
If $\frac{a}{b}=\frac{7}{3}$, then find the values of the following ratios : $\frac{a^3-b^3}{b^3}$
→
Find the angle which is four times its complement.
→
If f(x) =$2x^3 - 13x^2 + 17x + 12$, Find:
$f(-3)$
→
On her birthday Reema distributed chocolates in an orphanage. The total number of chocolates she distributed is given by $\big(5+\sqrt{11}\big)\big(5-\sqrt{11}\big).$
  1. Find the number of chocolates distributed by her.
  2. Write the moral values depicted here by Reema.
→
How many lines can be drawn through a geven point.
→