Use the discriminant to find the number and type of roots: -7x + 15x2 - 4 = 0.

Question

lgbasallote · Answer

discriminant is $b^2 - 4ac$

anonymous · Answer

the general equation is of form ax² + bx + c
compare your equation with the general form and find the value of a b and c 
and the put those values in the formula for discriminant as mentioned by @lgbasallote

mathslover · Answer

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