Untitled Quiz

 $Expansion\ of\ \left(x\ +4\right)^2\ is\$  

•  $x^2+8x+16$  

• x $x^2+8x+4$  

•  $x^2-8x+16$  

•  $x^2+8x-16$  

Expand (x−4)².

• x² −8x+16

• x² −8x−16

• x² +8x+16

• x² −16

Find (2l – 3m + 4n)²

• 4l² - 9m² + 16n² – 12lm + 24mn + 16nl

• 4l² + 9m² + 16n² + 12lm – 24mn + 16nl

• 4l² + 9m² + 16n² – 12lm + 24mn + 16nl

• 4l² + 9m² + 16n² – 12lm – 24mn + 16nl

Find 96 X 104, using identity

• 9984

• 9974

• 9964

• 9954

 $\left(a^2+2ab\ +b^2\right)$  is the expansion of

•  $\left(a+b\right)^2$  

•  $\left(a-b\right)^2$  

•  $\left(a+b\right)^3$  

• none of these

 $If\ x^2\ +\ \frac{1}{x^2}\ =\ 18,\ find\ x\ -\ \frac{1}{x}$  

• 4

• -4

•  $+-4$  

• 16

Using identity find 201 x 199

• 3000

• 3999

• 39999

• 31111

(5-p)(5-p) is of the form

•  $\left(a-b\right)\left(a+b\right)$  

•  $\left(a-b\right)^2$  

•  $\left(a+b\right)^2$  

• none of these

Find (102)² - (98)²

• 200

• 400

• 600

• 800

 $\left(a-5\right)\left(2a-9\right)$  is of the form

•  $\left(a+b\right)\left(a-b\right)$  

•  $\left(a+b\right)^2$  

•  $\left(x+a\right)\left(x+b\right)$  

• none of these