Question

a)(4+-3).(×+5)?
b)(5+5×).(8+2×)?
c)(6×-2).(2×+5)?
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Answer 1

Resposta:

a) (4+-3).(x+5) = 4x+20-3x-15= x+5

b) (5+5x).(8+2x) = 40+10x+40x+10x² = 10x²+50x+40

c) (6x-2).(2x+5) = 12x²+30x-4x-10 = 12x²+26x-10

Explicação passo-a-passo: