21(a)Quadratic Equations InequalitiesEasy2 marksWrite x2+8x−7 in the form (x+a)2+b where a and b are integers.AnswerGrade answerSolutionGrading criteria
21(b)Quadratic Equations InequalitiesEasy1 markWrite down the coordinates of the turning point of the curve y=x2+8x−7.x-coordinatey-coordinateGrade answerSolutionGrading criteria