book Maths Puzzle Numerical Ability

How many positive real zeros does the funtion f(x) = x4 + x3 - 7x - 1 have?

Read Solution (Total 0)

book Other Question

This is a problem that I have absolutely no idea how to do it.

Calculate the value of b^2 - 4ac and state how many real solutions the equation has 20x = 4x^2 + 25

Would you Please help me solve this equation: { { { -2x^2 - 4x - 2 } } }.