Respuesta :
Answer:
y = x² + 3x
Step-by-step explanation:
y = (x * x) + (3 * x)
y = x² + 3
[tex] \sf a) \: y = x(x + 3)[/tex]
[tex] \sf \implies y = x(x + 3)[/tex]
[tex] \sf \implies y = (x \times x) + (x \times 3)[/tex]
[tex] \sf \implies y = {x}^{2} + 3x[/tex]