exam Maths Puzzle Numerical Ability

Please help me with this homework question!Simplify B to the 7th power divided by B to the 2nd power times b to the 3th power.

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exam Other Question
solve and graph the solution set of x^2 - x - 6 < 0 im so bad at graphing can someone show me??please multiply (x^4+3)(x^4-5)

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multiply (-2x-3)^2