Question

solve the Equation 4xsquare-7x+2=0
and
give your
your answer. Connect to
bignifacant figures (root 17 =4.123​

Answer 1

Answer:

4x^2 - 7x + 2 = 0

comparing above equation with ax^2 + bx + c where a = 4 , b = -7 , c = 2

x = {- b +- (square root b^2 - 4ac)}/ 2a

= {-(-7) +- (square root (-7)^2 - 4 × 4 × 2 )}/2 × 4

= {7 +- square root 49 - 32}/8

={7 +- square root 17}/8

={7 + 4.123}/8

=1.390375