exam Maths Puzzle Numerical Ability

Complete the proof

(a exponent3 + b exponent 3)*(a+b)=a exponent2 - ab+b exponent 2

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LINEAR WORD PROBLEMS
1. Kara and Bill spend $400 on gifts. Bill spent three-fifths of what Kara spent. How much did each spend? (Bill $150, Kara $250)

2. Jim is planning to b Please help with problem. It comes from a homework sheet. Thank you.

Find the vertex of the parabola and determine whether the parabola opens upward, downward, to the left, or to the right.

15.) y = -(x+2)2 to the second power + 2