p(x)=8x^3-6x^2-2x^2+5x-1;x=√2
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Solution :
p(x) = 8x³-6x²-2x²+5x-1
Substitute x = √2 in p(x ) , we get
p(√2)=8(√2)³-6(√2)²-2(√2)²+5(√2)-1
= 8×2√2-6×2-2×2+5√2-1
= 16√2 - 12 - 4 + 5√2 - 1
= 21√2 - 17
•••••
p(x) = 8x³-6x²-2x²+5x-1
Substitute x = √2 in p(x ) , we get
p(√2)=8(√2)³-6(√2)²-2(√2)²+5(√2)-1
= 8×2√2-6×2-2×2+5√2-1
= 16√2 - 12 - 4 + 5√2 - 1
= 21√2 - 17
•••••
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