$x^2-y^2=$ 

Important Questions on Expressions and Special Products

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 10

If $(a+3b{)}^2=p{a}^2+qab+r{b}^2$, then $p+q+r=$ _____.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 11

If $\left(x+\frac{1}{x}\right)=2$, then $x^2+\frac{1}{x^2}=$ _____.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 12

$(a-1)\left(a^2-2a+1\right)=$ _____.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 13

$(a+b)(\sqrt{a}+\sqrt{b})(\sqrt{a}-\sqrt{b})=$ _____.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 14

If $a=2$ and $b=-1$, then $a^2+b^2+2ab=$ _____.

MEDIUM

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 15

$(x+a)(x-b)=$ _____.

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 16

The degree of $4x^2$ is

EASY

7th CBSE

IMPORTANT

Pearson IIT Foundation Mathematics>Chapter 2 - Expressions and Special Products>PRACTICE QUESTIONS (CLASSROOM WING)>Q 17

The degree of $-3x^3+5x^2+4$ is