[2 Mark Question Answer]

Questions

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6 questions · timed · auto-graded

Question 12 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$\frac{7.3 \times 7.3-2.7 \times 2.7}{7.3-2.7}$

Answer

Question 22 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$\left(6 \frac{4}{11}\right)^2-\left(4 \frac{7}{11}\right)^2$

Answer

Question 32 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$\left(7 \frac{3}{4}\right)^2-\left(2 \frac{1}{4}\right)^2$

Answer

Question 42 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$(0.8)^2-(0.2)^2$

Answer

0.6

Question 52 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$(15.8)^2-(9.2)^2$

Answer

165

Question 62 Marks

Using the identity $\left(a^2-b^2\right)=(a+b)(a-b)$, evaluate :
$82^2-18^2$

Answer

6400

[2 Mark Question Answer] - MATHS STD 8 Questions - Vidyadip

MATHS [2 Mark Question Answer]