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Verified answer
A.2n-3n=-nb.2k-5b-b-k
(2k-k)+(-5b-b)
k-6b
C.2x^2+3x^2-x^2-4-6
4x^2-10
Verified answer
Bab : Aljabara . 2n - 3n
⇒ -n
b. 2k - 5b - b - k
⇒ -6b + k
c. 2x² - 4 + 3x² - 6 - x²
⇒ 2x² + 3x² - x² - 4 - 6
⇒ 4x² - 10