Question

x-y-z X-Z para x= -2; y = 3ez=-5​

Answer 1

4a^2-3ab+c^3=,\:a=\frac{1}{2},\:b=2ec=-2:\quad 1-\frac{3b}{2}+c^3

Passos

\mathrm{For}\:4a^2-3ab+c^3=\:\mathrm{substitute}\:a\space\mathrm{\:with\:}\space\frac{1}{2}

=4\left(\frac{1}{2}\right)^2-3\cdot \frac{1}{2}b+c^3

\mathrm{Find\:}4a^2-3ab+c^3=\:\mathrm{given}\:a=\frac{1}{2},\:b=2ec=-2

a²: (1/2)²

\mathrm{Substituir\:}a=\frac{1}{2}

=4\left(\frac{1}{2}\right)^2-3\cdot \frac{1}{2}b+c^3

Expandir 4 (1/2)² -3 · 1/2b + c³ :     1- 3b/2  +c³

=1-\frac{3b}{2}+c^3

Estou no quinto ano, se estiver errado eu me desculpo