10% of $20 is 2 so the shirt would be $18 before tax
A quadratic equation can be written as: ax² + b.x + c =0
But if you know the values of the 2 roots x' and x", you can write it:
a(x-x')(x-x"), Since the roots are given ( x' = -4 and x" = -5) and also a (=2)
then the equation becomes:
2(x + 4)(x +5) =0
Answer:
Step-by-step explanation:

Use KCF method for fraction division
Keep the first fraction, Change division to multiplication and filp the second fraction

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