Question Simplify the expression 15−3x2 Evaluate 15−x2×3Solution 15−3x2 Show Solution Factor the expression 3(5−x2) Evaluate 15−x2×3Use the commutative property to reorder the terms 15−3x2Solution 3(5−x2) Show Solution Find the roots x1=−5,x2=5Alternative Form x1≈−2.236068,x2≈2.236068 Evaluate 15−x2×3To find the roots of the expression,set the expression equal to 0 15−x2×3=0Use the commutative property to reorder the terms 15−3x2=0Move the constant to the right-hand side and change its sign −3x2=0−15Removing 0 doesn't change the value,so remove it from the expression −3x2=−15Change the signs on both sides of the equation 3x2=15Divide both sides 33x2=315Divide the numbers x2=315Divide the numbers More Steps Evaluate 315Reduce the numbers 15Calculate 5 x2=5Take the root of both sides of the equation and remember to use both positive and negative roots x=±5Separate the equation into 2 possible cases x=5x=−5Solution x1=−5,x2=5Alternative Form x1≈−2.236068,x2≈2.236068 Show Solution