soit la fonction A(x):
A(10)=7x10^2-2x10+5
=7x100-2x10+5
=700-2x10+5
=700-20+5
=680+5
=685
A(-3)=7x(-3)^2-2x(-3)+5
=7x9-2x(-3)+5
=63-2x(-3)+5
=63+6+5
=74
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soit la fonction A(x):
A(10)=7x10^2-2x10+5
=7x100-2x10+5
=700-2x10+5
=700-20+5
=680+5
=685
A(-3)=7x(-3)^2-2x(-3)+5
=7x9-2x(-3)+5
=63-2x(-3)+5
=63+6+5
=74