Expand: $(3x + 7y)(3x - 7y)$
- A$9x^2 - 49y^2$
- B$9x^2 + 49y^2$
- C$9x^2 - 42xy - 49y^2$
- D$9x^2 + 42xy - 49y^2$
Explore More
Similar Questions
Which of the following expressions are polynomials in one variable and which are not? State the reason for your answer. If the given expression is a polynomial,state whether it is a polynomial in one variable or not: $\pi x^{2}-\sqrt{3} x+11$
Easy
View SolutionExpand $\left(\frac{x}{2}+\frac{2 y}{3}-\frac{3 z}{4}\right)^{2}$
Easy
View SolutionSimplify $(2 x-5 y)^{3}-(2 x+5 y)^{3}$
Medium
View SolutionFactorise $x^{3}+2x^{2}-13x+10$.
Medium
View SolutionFactorise $: x^{3}-125$
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo