5(2x+5)²化简

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5(2x+5)²化简

=5((2x)^2+2*(2x)*5+5^2)
=5(4x^2+20x+25)
=20x^2+100x+125

=5(4x²+20x+25)
=20x²+100x+125

5(2x+5)²
=5(4x²+20x+25)
=20x²+100x+125