2x(x-5)-3(x²-2x)+(x-2)x(5k+n)(k-2n)-k(4k+n)prosze szybko.... Question from @jastrzebskadom55

June 2022 2 4 Report

2x(x-5)-3(x²-2x)+(x-2)x
(5k+n)(k-2n)-k(4k+n)
prosze szybko

olakoszlaga

Odpowiedź:

2x(x-5)-3(x²-2x)+(x-2)x = 2x^2 - 10x - 3x^2 - 6x + x^2 - 2x = - 18x

(5k+n)(k-2n)-k(4k+n) = 5k^2 - 10kn +kn -2n^2 - 4k^2 + kn = -8kn + 3k^2 - 2n^2

2 votes Thanks 2

Magda

Odpowiedź:

$2x(x-5)-3(x^2-2x)+(x-2)x=2x^2-10x-3x^2+6x+x^2-2x=-6x\\\\\\(5k+n)(k-2n)-k(4k+n)=5k^2-10kn+kn-2n^2-4k^2-kn=k^2-10kn-2n^2$

0 votes Thanks 1

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