Simplify the expression above.

Please use "x" for k in your answer.

Mathematical Equivalence

OFF

Rationals are ___________ with variables in the denominator.

• Tacos

• Radicals

• Variables

• Fractions

Simplify

 $\left(2+\sqrt{10}\right)\left(2-\sqrt{10}\right)$  

•  $-6$  

•  $4-\sqrt{10}$  

•  $4$  

•  $0$  

Simplify the following Expression : (7 + √6) (7 - √6)

• 49√6

• 13

• 43

• 36√7

Answer explanation

(7 + √6) (7 - √6) = 7² - (√6)² = 49 - 6 = 43

Simplify the expression

• 92

• 4√3 - 16√5

• -12√15

• 92 + 16√15

Simplify

• A

• B

• C

• D

Rationalize the denominator:
 $\frac{7\sqrt{3}}{4\sqrt{7}}$  

•  $\frac{7\sqrt{21}}{28}$  

•  $\frac{7\sqrt{21}}{196}$  

•  $\frac{\sqrt{21}}{28}$  

•  $\frac{\sqrt{21}}{4}$  

Simplify the expression above.

Mathematical Equivalence

OFF