Question Simplify the expression −32x2−420x Evaluate −32x2−28x×15Solution −32x2−420x Show Solution Factor the expression −4x(8x+105) Evaluate −32x2−28x×15Multiply the terms −32x2−420xRewrite the expression −4x×8x−4x×105Solution −4x(8x+105) Show Solution Find the roots x1=−8105,x2=0Alternative Form x1=−13.125,x2=0 Evaluate −32x2−28x×15To find the roots of the expression,set the expression equal to 0 −32x2−28x×15=0Multiply the terms −32x2−420x=0Factor the expression More Steps Evaluate −32x2−420xRewrite the expression −4x×8x−4x×105Factor out −4x from the expression −4x(8x+105) −4x(8x+105)=0When the product of factors equals 0,at least one factor is 0 −4x=08x+105=0Solve the equation for x More Steps Evaluate −4x=0Change the signs on both sides of the equation 4x=0Rewrite the expression x=0 x=08x+105=0Solve the equation for x More Steps Evaluate 8x+105=0Move the constant to the right-hand side and change its sign 8x=0−105Removing 0 doesn't change the value,so remove it from the expression 8x=−105Divide both sides 88x=8−105Divide the numbers x=8−105Use b−a=−ba=−ba to rewrite the fraction x=−8105 x=0x=−8105Solution x1=−8105,x2=0Alternative Form x1=−13.125,x2=0 Show Solution