book Maths Puzzle Numerical Ability

I am a mom trying to help my child heres what we have.
two plans for a chillie cook off.#1. $7.00 entrance fee 10.cents per cup chili
plan 2.)$5. entrance 25cents per cup. Questi

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book Other Question
can someone please the factor the differences of two squares 2 question, thanks
b^2-144
x^-81 Please help with this question. Simplify the expression usin gthe sum and difference pattern.

*= sqare root sign

(*2 + *3) (*2 - *3)