Question

Quanto é:

A) $\sqrt{5} + \sqrt{45} + \sqrt{50}$

B) $\sqrt{28} + \sqrt{63} + \sqrt{7}$

Mandem cálculos por favor!

Answer 1

a)

= √5 + √45 + √50
= √5 + √9√5 + √25.√2
= √5 + 3√5 + 5√2
= 4√5 + 5√2

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
= √28 + √63 + √7
= √4.√7 + √9.√7 + √7
= 2√7 + 3√7 + √7
= 6√7