Did you mean :
f(x) = x² - 2x, find x = -3
f(-3) = (-3)² - 2(-3)
f(-3) = 9 + 6
f(-3) = 15
Answer:
QRS equals to 91
Step-by-step explanation:
50 + 41 = 91
6.8127 × 10^16
Hope this helps:)
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