Question Simplify the expression 4c2−4 Evaluate c2×4−4Solution 4c2−4 Show Solution Factor the expression 4(c−1)(c+1) Evaluate c2×4−4Use the commutative property to reorder the terms 4c2−4Factor out 4 from the expression 4(c2−1)Solution More Steps Evaluate c2−1Rewrite the expression in exponential form c2−12Use a2−b2=(a−b)(a+b) to factor the expression (c−1)(c+1) 4(c−1)(c+1) Show Solution Find the roots c1=−1,c2=1 Evaluate c2×4−4To find the roots of the expression,set the expression equal to 0 c2×4−4=0Use the commutative property to reorder the terms 4c2−4=0Move the constant to the right-hand side and change its sign 4c2=0+4Removing 0 doesn't change the value,so remove it from the expression 4c2=4Divide both sides 44c2=44Divide the numbers c2=44Divide the numbers More Steps Evaluate 44Reduce the numbers 11Calculate 1 c2=1Take the root of both sides of the equation and remember to use both positive and negative roots c=±1Simplify the expression c=±1Separate the equation into 2 possible cases c=1c=−1Solution c1=−1,c2=1 Show Solution