Question

Just question 1 please!!!!!

Answer 1

see below

Explanation:

by rewriting the function we can see that it has a minimum at

`y=7x^2+7x-7\Rightarrow y=7(x^2+x-1)\Rightarrow y=7[(x+(1)/(2))^2-(1)/(4)-1]\Rightarrow`

`y=7[(x+(1)/(2))^2-(5)/(4)]\Rightarrow minimum \ (-(1)/(2), -(35)/(4))`

bye.