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Matematik213
@Matematik213
August 2022
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Упростите выражение
(x+2)(x-9)-3x(3-2x)
(a+5)(a-2)+(a+4)(a-5)
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rinaei
X^2 - 9x + 2x - 18 - 9x +6x^2 = 7x^2 - 16x - 18
a^2 - 2a +5a - 10 + a^2 -5a + 4a - 20 = 2a^2 +2a - 30
5 votes
Thanks 4
Matematik213
^-это 2?
rinaei
^2 это значит, что во второй степени
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Answers & Comments
a^2 - 2a +5a - 10 + a^2 -5a + 4a - 20 = 2a^2 +2a - 30