7. X2=25
X=5, x=—5
8. (X—3)2=49
X=10, x=—4
9. X2+3x—28.
X=4, x=—7.
10. 5x2–8=3x.
X=8/5, x=—1
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Answer:
<h2>f(-2) = 13</h2>
Step-by-step explanation:
f(x) = x² - 2x + 5
Yo find f(-2) substitute the value of x that's - 2 into f(x) that is for every x in f (x) replace it with - 2
So we have
f( - 2) = (-2)² - 2(-2) + 5
= 4 + 4 + 5
= 8 + 5
We have the final answer as
<h3>f(-2) = 13</h3>
Hope this helps you
Answer:X=9 i believe.
Step-by-step explanation:
add 2 and 7