Question Simplify the expression 20a2−100 Evaluate a2×20−100Solution 20a2−100 Show Solution Factor the expression 20(a2−5) Evaluate a2×20−100Use the commutative property to reorder the terms 20a2−100Solution 20(a2−5) Show Solution Find the roots a1=−5,a2=5Alternative Form a1≈−2.236068,a2≈2.236068 Evaluate a2×20−100To find the roots of the expression,set the expression equal to 0 a2×20−100=0Use the commutative property to reorder the terms 20a2−100=0Move the constant to the right-hand side and change its sign 20a2=0+100Removing 0 doesn't change the value,so remove it from the expression 20a2=100Divide both sides 2020a2=20100Divide the numbers a2=20100Divide the numbers More Steps Evaluate 20100Reduce the numbers 15Calculate 5 a2=5Take the root of both sides of the equation and remember to use both positive and negative roots a=±5Separate the equation into 2 possible cases a=5a=−5Solution a1=−5,a2=5Alternative Form a1≈−2.236068,a2≈2.236068 Show Solution