Question

x2+3x=28equis al cuadrado mas tres equis igual a veintiochocomo resolver

Answer 1

X² + 3X = 28

X² + 3X - 28 = 0

(X+7)(X-4) = 0

X + 7= 0
X = - 7

X-4 = 0
X = 4

R. X= -7, X=4