exam Maths Puzzle Numerical Ability

Make use of synthetic division and the remainder theorem to find the indicated function values.

g(t) = t^4 - 2t^2 - 6; find g(-2)

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exam Other Question

Factor the polynomial completely.

I have factored other polynomials, but this one confuses me. The equation is...

-3s^2-10s+8

Thank you very much for your time!
Joe can cut 45 square feet of tall grass per minute. The empty lot of tall grass behind his house is rectangle, 80 by 50 (in Yards). Joe's wife Becky can cut 20% more tall grass