(A) The given expression is of the form $(a+b)^{2}-(a-b)^{2}$,where $a = 2.3$ and $b = 1.7$.We know the algebraic identity: $(a+b)^{2}-(a-b)^{2} = 4ab

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(A) The given expression is of the form $(a+b)^{2}-(a-b)^{2}$,where $a = 2.3$ and $b = 1.7$.We know the algebraic identity: $(a+b)^{2}-(a-b)^{2} = 4ab$.Substituting the values of $a$ and $b$ into the identity:$= 4 \times 2.3 \times 1.7$$= 4 \times 3.91$$= 15.64$.

Competitive Quantitative Aptitude Number system Simplification

Medium

What is the value of $(2.3+1.7)^{2}-(2.3-1.7)^{2} ?$

A
$15.64$
B
$4.45$
C
$7.82$
D
$6.62$

Explore More

Browse All

Question Bank

All Subjects

Competitive Questions

Competitive

Quantitative Aptitude Questions

Chapter

Number system

Subtopic

Simplification

What will come in the place of the question mark $(?)$ in the following expression?
$59.88 \div 12.21 \times 6.35 = ?$

Easy

View Solution

$\frac{5}{8}$ of $4011.33 + \frac{7}{10}$ of $3411.22 = ?$

Medium

View Solution

If $\frac{\sqrt{3+x}+\sqrt{3-x}}{\sqrt{3+x}-\sqrt{3-x}}=2,$ then $x$ is equal to

Difficult

View Solution

If $\frac{1}{6.198} = 0.16134,$ then the value of $\frac{1}{0.0006198}$ is

Medium

View Solution

If $a=25, b=15, c=-10$; then the value of $\frac{a^{3}+b^{3}+c^{3}-3abc}{(a-b)^{2}+(b-c)^{2}+(c-a)^{2}}$ is

Difficult

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

What is the value of $(2.3+1.7)^{2}-(2.3-1.7)^{2} ?$

Similar Questions

What will come in the place of the question mark $(?)$ in the following expression?$59.88 \div 12.21 \times 6.35 = ?$

$\frac{5}{8}$ of $4011.33 + \frac{7}{10}$ of $3411.22 = ?$

If $\frac{\sqrt{3+x}+\sqrt{3-x}}{\sqrt{3+x}-\sqrt{3-x}}=2,$ then $x$ is equal to

If $\frac{1}{6.198} = 0.16134,$ then the value of $\frac{1}{0.0006198}$ is

If $a=25, b=15, c=-10$; then the value of $\frac{a^{3}+b^{3}+c^{3}-3abc}{(a-b)^{2}+(b-c)^{2}+(c-a)^{2}}$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

What will come in the place of the question mark $(?)$ in the following expression?
$59.88 \div 12.21 \times 6.35 = ?$