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Ratkaise yhtälö
(x+1)(x+4)=4 (4 p.)

Ratkaise yhtälö $(x+1)(x+4)=4$ ( $4$ p.)

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Solve equations with the distributive property

Full solution

Q. Ratkaise yhtälö

(x+1)(x+4)=4

(

4

p.)

Combine like terms: Now, combine like terms. $x^2 + 5x + 4 = 4$
Subtract to set to zero: Next, subtract $4$ from both sides to set the equation to zero. $\newline$ $x^2 + 5x + 4 - 4 = 4 - 4$ $\newline$ $x^2 + 5x = 0$
Factor out $x$ : Now, factor out $x$ from the left side. $x(x + 5) = 0$
Set factors equal: Set each factor equal to zero and solve for $x$ . $x = 0$ or $x + 5 = 0$
Solve for $x$ : If $x + 5 = 0$ , then subtract $5$ from both sides to solve for $x$ . $\newline$ $x = -5$

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