Answer:
[tex]\huge\boxed{Q(-10)=699}[/tex]
Step-by-step explanation:
[tex]Q(-10)-\text{put}\ x=-10\ \text{to the equation of}\ Q(x)=7x^2-1:\\\\Q(-10)=7(-10)^2-1\qquad\text{first - exponentiation}\\\\Q(-10)=7(100)-1\qquad\text{next - multiplication}\\\\Q(-10)=700-1\qquad\text{last subtraction}\\\\Q(-10)=699[/tex]
