Question Simplify the expression Solution 36x2−144 Evaluate 9x2×4−144Solution 36x2−144 Show Solution Factor the expression Factor 36(x−2)(x+2) Evaluate 9x2×4−144Evaluate 36x2−144Factor out 36 from the expression 36(x2−4)Solution More Steps Evaluate x2−4Rewrite the expression in exponential form x2−22Use a2−b2=(a−b)(a+b) to factor the expression (x−2)(x+2) 36(x−2)(x+2) Show Solution Find the roots Find the roots of the algebra expression x1=−2,x2=2 Evaluate 9x2×4−144To find the roots of the expression,set the expression equal to 0 9x2×4−144=0Multiply the terms 36x2−144=0Move the constant to the right-hand side and change its sign 36x2=0+144Removing 0 doesn't change the value,so remove it from the expression 36x2=144Divide both sides 3636x2=36144Divide the numbers x2=36144Divide the numbers More Steps Evaluate 36144Reduce the numbers 14Calculate 4 x2=4Take the root of both sides of the equation and remember to use both positive and negative roots x=±4Simplify the expression More Steps Evaluate 4Write the number in exponential form with the base of 2 22Reduce the index of the radical and exponent with 2 2 x=±2Separate the equation into 2 possible cases x=2x=−2Solution x1=−2,x2=2 Show Solution