Question

alguem consegue fazer essas contas?

Answer 1

Resposta:

Explicação passo-a-passo:

3°)

a) (√2+5)-√2x(4√2)

2+10√2+25 -√2x(4-√2)

(√2+5)²-√2x(4-√2)

2+10√2+25-4√2+2

2+10√2+25-4√2

29+10√2-4√2

2+10√2+25-4√2+2

29+6√2

b)(2√3-4)²+(√3+1)x(√3-1)

12-16√3+16+(√3+1)x(√3-1)

12-16√3+16+3-1

30-16√3

c)  15+3√2-5√2-2-(√7-√2)x(√7+√2)

15+3√2-5√2-2-(7-2)

15+3√2-5√2-2-5

8+3√2-5√2

8-2√2

4) 5√5+30+12√5+8-(√5-2)³

5√5+30+12√5+8(5√5-30+12√5-8)

5√5+30+12√5+8-(17√5-38)

5√5+30+12√5+8-17√5+38