exam Maths Puzzle Numerical Ability

I need some help with this problem, it says to factor the trinomial, the trinomial is: 12x^2+10x-50, thanks.

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exam Other Question

Determine whether the following equations have a solution or not? Justify your answer.
2x2 + x - 1 = 0 Please help me!!!!
My problem says to graph each quadratic equation and state the vertex and intercepts. The equation is y=x^2+4x. I have to have at least 4 intercepts. Thank you so much!!