Question Simplify the expression 4y2−12y+9 Evaluate (2y−3)2Use (a−b)2=a2−2ab+b2 to expand the expression (2y)2−2×2y×3+32Solution 4y2−12y+9 Show Solution Find the roots y=23Alternative Form y=1.5 Evaluate (2y−3)2To find the roots of the expression,set the expression equal to 0 (2y−3)2=0The only way a power can be 0 is when the base equals 0 2y−3=0Move the constant to the right-hand side and change its sign 2y=0+3Removing 0 doesn't change the value,so remove it from the expression 2y=3Divide both sides 22y=23Solution y=23Alternative Form y=1.5 Show Solution
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