Question

resolva
p(X)=x³-x²+4x-7
p(-3)
p(4)​

Answer 1

$\boxed{p(x) = x {}^{3} - x {}^{2} + 4x - 7 }$

$p( - 3) = ( - 3) {}^{3} - ( - 3) {}^{2} + 4 \: . \: ( - 3) - 7 \\ p( - 3) = - 27 - 9 - 12 - 7 \\ p( - 3) = - (27 + 9 + 12 + 7)\\ \boxed{\boxed{\boxed{p( - 3) = - 55}}}$

$p(4) = 4 {}^{3} - 4 {}^{2} + 4 \: . \: 4 - 7 \\ p(4) = 64 - 16 + 16 - 7 \\ p(4) = 64 - 7 \\ \boxed{\boxed{\boxed{p(4) = 57}}}$

att. yrz