Question

find the value of the polynomial 3 x cube minus 4 x square + 7 x - 5 bracket is equal to P X bracket is equal to zero when x is equal to 3 and also when x is equal to -3​

Answer 1

u mean to write

P(x)=3x³ - 4x² + 7x - 5

if yes then solution is

for(x)=3

3(3³) - 4(3²) + 7(3) - 5

81 - 36 + 21 - 5

102 - 41

ANS = 61

for(x)=-3

3(-3³) - 4(-3²) + 7(-3) - 5

-81 -36 -21 -5

ANS = -143

Answer 2

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