How to solve f(-3)= -2x^2+5x

Mathematics

2 answers:

Sauron [17]3 years ago

4 0

Replace all the x values with -3

f(-3)=-2(-3)^2+5(-3)
f(-3)=2(9)-15
f(-3)=18-15
f(-3)=3

Hope I helped :)

AleksandrR [38]3 years ago

3 0

Plug -3 in for x. the equation should look like this
f(-3)=-2(-3)^2+5(-3)

simplify by multiplying and you get
f(-3)=6^2-15

now apply the exponent
f(-3)=36-15

finish it off by subtracting and you get
f(-3)=21

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