Question

calcule a expressao: a raiz quadrada de b elevado a 2 - 4ac, se a: 1, b: -5 e c: -6.

Answer 1

$\sqrt{b^2-4ac}\\\\\\ \sqrt{(-5)^2-4\cdot(1)\cdot(-6)}\\\\\\ \sqrt{25+24}\\\\\\ \sqrt{49}= \frac{+}{-}7$

Answer 2

Raiz (b^2 -4×a×c) Raiz( (-5)^2 -4× (1)× (-6) ) Raiz ( 25+ 24) Raiz ( 49) = 7