Question

what is the value of 5x²-3x+7 when x=½​

Answer 1

Answer:

Mark me as a Brainlist pls

Step-by-step explanation:

5x²-3x+7

if x = ½

then

$5x²-3x+7 \\ = > 5( { \frac{1}{2} )}^{2} - 3 \times \frac{1}{2} + 7 \\ = > \frac{5}{4} - \frac{3}{2} + 7 \\ = > take \: lcm \: we \: get \\ = > \frac{5 - 6 + 28}{4} = \frac{27}{4}$

Answer 2

Answer:

27/4

Step-by-step explanation:

5x²-3x+7

=5(1/2)²-3(1/2)+7

=5*1/4-3/2+7

=5/4-3/2+7

=(5-6)/4+7

= -1/4+7

=27/4