Step by step explanation: 5x^2 - 4 + x = 0 Use the commutative property to reorder the terms: 5x^2+x-4=0 Write x as a difference: 5x^2+5x-4x-4=0 Factor out 5x from the expression: 5xx(x-1)-4x - 4=0 Factor out -4 from the expression: 5xx(x+1) - 4 (x-1)=0 Factor out x+1 from the expression: (x-1) x (5x-4) =0 When the product of factors equal 0 at least one factor is 0 X + 1 = 0 5x - 4 = 0 Solve the equation: The equation has two solutions X1=-1, x2 = 4/5
