Does anyone use hegarty maths ​

Which of the following expressions is equal to 2x^2+8

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x