Question Simplify the expression −r4 Evaluate −r2×r2Solution More Steps Evaluate r2×r2Use the product rule an×am=an+m to simplify the expression r2+2Add the numbers r4 −r4 Show Solution Find the roots r=0 Evaluate −r2×r2To find the roots of the expression,set the expression equal to 0 −r2×r2=0Multiply the terms More Steps Evaluate r2×r2Use the product rule an×am=an+m to simplify the expression r2+2Add the numbers r4 −r4=0Change the signs on both sides of the equation r4=0Solution r=0 Show Solution