Question

me ajudem pfv, 10 pontinhos​

Answer 1

Explicação passo-a-passo:

d)

$4 \sqrt{18} - 3 \sqrt{8 }$

$4 \sqrt{2 \times {3}^{2} } - 3 \times 2 \sqrt{ {2}^{2} \times 2}$

$12 \sqrt{2} - 12 \sqrt{2}$

$0$

e)

$3 \sqrt{8} + 4 \sqrt{18} - 3 \sqrt{50} + \sqrt{32}$

$3 \times \sqrt{ {2}^{2} \times 2} + 4 \sqrt{2 \times {3 }^{2} } - 3 \sqrt{2 \times {5}^{2} } + \sqrt{ {2}^{2} \times {2}^{2} \ \times 2 }$

$6 \sqrt{2} + 12 \sqrt{2} - 15 \sqrt{2} + 4 \sqrt{2}$

$7 \sqrt{2}$