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pefficients in eachEXERCISE 2.4 (Optional)*1. Verify that the numbers given alongside of the cubic polynomialsAlso verify the relationship between the zeroes and the coefficie(ii) x - 4x2 + 5x - 2; 2,1.1© 2x+x2–5x+2; -1, -2 |
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Answer» 2^3+x^2-5x+2=0; 2(1/2)^3+(1/2)^2-5(1/2)+2= 2(1/8)+(1/4)-(5/2)+2= (1/4)+(1/4)-10/2+2= 1/4 +1/4-10/2+2= 1+1-20+4/4=6-20/4=-14/4=-7/2; 2x^3+x^2-5x+2; in (1); 2(1)^3+(1)^2-5(1)+2 =2+1-5+2==0 2x^3+x^2-5x+2 in (-2); =2(-2)^3+(-2)^2-5(-2)+2; =2(-8)+(4)+10+2=-16+16=0 |
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