Solve the equation 3x^(2)-7x+3 giving your answer to three significant figures.

Since there is no further factorisation possible we use the quadratic formula x=[-b±√(b2-4ac)]/2a. From the equation in question we have  a=3, b=-7, c=3. Substituting into the quadratic formula x=[7±√((-7)2-4(33)]/23 =[7±√13]/6. Thus x=1.77 or x=0.566.

BH

Related Maths GCSE answers

All answers ▸

Find the roots of the equation (x^2+5x+4)/(x^2-3x+2)


What is algebra and why do we use it?


Find the points that the graph "y = x^2 -4x -14" touches the x-axis


Two ordinary fair dice are rolled. Work out the probability that both land on a value less than 4.