exam Maths Puzzle Numerical Ability

Determine whether the following equations have a solution or not? Justify your answer.
2x2 + x - 1 = 0

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exam Other Question

please help solve

(2m^2p^3)^2 (4m^2p)^-2 / (-3mp^4)^-1 (2m^3p^4)^3 I need some help with this problem, it says to factor the trinomial, the trinomial is: 12x^2+10x-50, thanks.