Question Simplify the expression 2y2−20 Evaluate y×2y−20Solution More Steps Evaluate y×2yMultiply the terms y2×2Use the commutative property to reorder the terms 2y2 2y2−20 Show Solution Factor the expression 2(y2−10) Evaluate y×2y−20Multiply More Steps Evaluate y×2yMultiply the terms y2×2Use the commutative property to reorder the terms 2y2 2y2−20Solution 2(y2−10) Show Solution Find the roots y1=−10,y2=10Alternative Form y1≈−3.162278,y2≈3.162278 Evaluate y×2y−20To find the roots of the expression,set the expression equal to 0 y×2y−20=0Multiply More Steps Multiply the terms y×2yMultiply the terms y2×2Use the commutative property to reorder the terms 2y2 2y2−20=0Move the constant to the right-hand side and change its sign 2y2=0+20Removing 0 doesn't change the value,so remove it from the expression 2y2=20Divide both sides 22y2=220Divide the numbers y2=220Divide the numbers More Steps Evaluate 220Reduce the numbers 110Calculate 10 y2=10Take the root of both sides of the equation and remember to use both positive and negative roots y=±10Separate the equation into 2 possible cases y=10y=−10Solution y1=−10,y2=10Alternative Form y1≈−3.162278,y2≈3.162278 Show Solution