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yuradex [85]
3 years ago
8

What is this, how do i solve it, what the answer

Mathematics
1 answer:
umka2103 [35]3 years ago
8 0

Answer:

1

Step-by-step explanation:

This is a function where you have to plug in the value you are given for x.  In this case, you are given 1 as your value (after the semicolon).  So, you set up your equation like so: (1)^3 + 3(1)^2 -7(1) + 4

(1)^3=1

3(1)^2 = 3

-7(1) = -7

4= 4

so you have 1+3-7+4 which is 1

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Considere a equação 5x + 5 = 4x - 2. a) substituindo x por -7 e efetuando os cálculos, mostre que -7 é a solução da equação. b)
DiKsa [7]

Responda:

Explicação passo a passo:

Dê = n a equação 5x + 5 = 4x - 2, para mostrar que x = -7 é a solução, as seguintes etapas devem ser seguidas.

Etapa 1: Subtraia 5 de ambos os lados da equação

5x + 5 - 5 = 4x - 2 - 5

5x = 4x - 7

Etapa 2: Subtraia 4x de ambos os lados da equação resultante

5x = 4x - 7

5x - 4x = 4x - 7 - 4x

x = -7

Isso prova que a solução é x = -7

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