Question

Select all expressions that have perfect squares.

1. 2x^2 + 20x + 100
2. 9x^2 + 24x + 16
3. (7-3x)^2
4. (5x + 4) (5x - 4)
5. (1 - 2x) (-2x + 1)
6. 4x^2 + 6x + 9/4

Answer 1

The expressions that have perfect squares are 2x^2 + 20x + 100 = (x+5)^2 and (7-3x)^2.

Explanation:

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