Question Factor the expression (y−4)(y+4) Evaluate y2−16Rewrite the expression in exponential form y2−42Solution (y−4)(y+4) Show Solution Find the roots y1=−4,y2=4 Evaluate y2−16To find the roots of the expression,set the expression equal to 0 y2−16=0Move the constant to the right-hand side and change its sign y2=0+16Removing 0 doesn't change the value,so remove it from the expression y2=16Take the root of both sides of the equation and remember to use both positive and negative roots y=±16Simplify the expression More Steps Evaluate 16Write the number in exponential form with the base of 4 42Reduce the index of the radical and exponent with 2 4 y=±4Separate the equation into 2 possible cases y=4y=−4Solution y1=−4,y2=4 Show Solution
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