Ting Xuan's answer to Lol's Secondary 2 Maths Singapore question.
No; it’s not (2x + 1)^2.
It’s (x + 0.5)^2.
You must not convert the (x + 0.5) into (2x + 1) because this is not an equation. This is an expression.
It’s (x + 0.5)^2.
You must not convert the (x + 0.5) into (2x + 1) because this is not an equation. This is an expression.
(2x + 1)² = 4x² + 4x + 1 = 4(x² + x + ¼), which is actually 4 times of the expression given.
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