# Simplify expression: a) 0.7 (3p-2q) +4q b)-3 (2a-8b) +13a c) 14 (4-6th) +5 (6u +1) d) 6 (10kh-4)-9 (5-3rd) e) 3m(4-m) +9m (m-8) e) 2х^2 (4-9th) - the 3rd (х^2-4)

Brecshinskiy

381

a) 0.7 (3p-2q) +4q=2.1p-1.4q+4q=2.1p+2.6q b)-3 (2a-8b) +13a =-6a+24b+13a=7a+24b c) 14 (4-6th) +5 (6u +1) =56-84y+30y+5=61-54y d) 6 (10kh-4)-9 (5-3rd) =60x-24-45+27x=87x-69 e) 3m(4-m) +9m (m-8) =12m-3m^2+9m^2-72m=6m^2-60m e) 2х^2 (4-9th) - the 3rd (х^2-4) =8x^2-18x^3-3x^3+12x=8x^2-21x^3+12x

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Brooks John

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