Question

Simplify fully the following
a) 2 square root 5 x 5 square root 5

Answer 1

Answer:

50

Step-by-step explanation:

note that $\sqrt{a}$ × $\sqrt{a}$ = a

Given

2$\sqrt{5}$ × 5$\sqrt{5}$

= 2 × 5 × $\sqrt{5}$ × $\sqrt{5}$

= 10 × 5

= 50