18.3 simplified 7.3.
or i could just be 7
Answer:
5
Step-by-step explanation:
Put -2 where x is and do the arithmetic.
f(x) = 2x² -3
f(-2) = 2(-2)² -3 = 2(-2)(-2) -3 = 8 -3
f(-2) = 5
6/25-63/125
Make the denominator the same:
= 30/125 - 63/125
Subtract:
= -33/125
Answer: -33/125