初中数学计算题

Question

如题所述

Answer 1

=2√2+9√2-3√2

=8√2

=√(3/2) x √(4/5)

=√(3/2 x 4/5)

=√(6/5)

=√30 /5

=(√16-2√2)/2+4√2

=2-√2+4√2

=2+3√2

=(√3)²-1

=3-1

=2

=3-2√6+2

=5-2√6

=(√5-2)^2004 * (√5+2)^(2004-1)

=[(√5-2)(√5+2)]^2004/(√5+2)

=1/(√5+2)

=(√5-2)/(√5+2)(√5-2)

=√5-2

Answer 2

4、原式=(√3)² - 1²=3-1=2
5、原式=(√3)² - 2•√3•√2 + (√2)²
=3 - 2√6 + 2=5 - 2√6

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