Question

2) ESCREVA NA FORMA MAIS SIMPLES POSSIVEL CAD UMA DAS EXPRESSOES. A) 5 RAIZ 2 + RAIZ 2 - 3 RAIZ 2 B) RAIZ 8 + RAIZ 98 C) RAIZ 3 + RAIZ 75 - RAIZ 12 D) RAIZ 28 - 10 RAIZ 7

Answer 1

a) 5$\sqrt{2} + \sqrt{2} - 3 \sqrt{2} = 3 \sqrt{2}$
b) $\sqrt{8} + \sqrt{98} = \sqrt{4.2} + \sqrt{2.49} = 2 \sqrt{2} + 7 \sqrt{2} = 9 \sqrt{2}$
c) $\sqrt{75} - \sqrt{12} = \sqrt{25.3} - \sqrt{4.3} = 5 \sqrt{3} - 2 \sqrt{3} = 3 \sqrt{3}$
d) $\sqrt{28} - 10 \sqrt{7} = \sqrt{4.7} - 10 \sqrt{7} = 2 \sqrt{7} - 10 \sqrt{7} = - 8 \sqrt{7}$