1.) What number should be added to the expression x2+2x to change it into a perfect square trinomial?A.) 1 B.) 2 C.) 4 D.) 92.) What number should be added to the expression x2+10x to change it into a perfect square trinomial?A.) 5B.) 10C.) 25D.) 1003.) What are the solutions to the equation? b2−10b=39 Enter your answers in the boxes. b = ---- and ----4.) Which statement describes the first step to solve the equation by completing the square?2x2+12x=32A.) Multiply both sides of the equation by 16 .B.) Add 6 to each side of the equation.C.) Multiply both sides of the equation by 12 .D.) Add 36 to each side of the equation.5.) What are the solutions to the equation? 3x2+6x=45 Enter your answers in the boxes. x = ---- and ----