Question

6) Qual o valor numérico da expressão x²y + x x-V para x = 3 ey = -2?​

Answer 1

$\frac{x {}^{2} y + x}{x - y} \\ \frac{3 {}^{2} \: . \: ( - 2) + 3}{3 - ( - 2)} \\ \frac{ - 9 \: . \: 2 + 3}{3 + 2} \\ \frac{ - 18 + 3}{5} \\ \frac{ - 15}{5} \\ \boxed{\boxed{\boxed{ - 3}}}$

att. yrz

Answer 2

$\frac{ {x}^{2}y + x}{x - y}$

$\frac{ {3}^{2} \times( - 2) + 3 }{ 3 - (- 2)}$

$\frac{ - 9 \times 2 + 3}{3 + 2}$

$\frac{ - 18 + 3}{5}$

$\frac{ - 15}{5}$

$- 3$

$\Large\mathscr{\red{Attard}}$