Question

What is the greatest value of x which solves x2 + 3x - 70 = 0? x =

Answer 1

${x}^{2} + 3x - 70 = 0$

${x}^{2} + 10x - 7x - 70 = 0$

$x(x + 10) - 7(x + 10) = 0$

$(x - 7)(x + 10) = 0$

$x = 7$

$x = - 10$

7 > -10

greatest value of x = 7 which solves equation

7