14. For what value of k, is 3 a zero of the polynomial 2x2 + x + k?
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Answered by
3
put x=3
2x²+x+k =0
2(3)²+3+k= 0
2×9+3+k=0
18+3+k=0
21+k = 0
k = -21
The value of k is -21
Hope this will help you....
2x²+x+k =0
2(3)²+3+k= 0
2×9+3+k=0
18+3+k=0
21+k = 0
k = -21
The value of k is -21
Hope this will help you....
dhadshini:
thankyou
can you help me in the worksheet pls
i ll help you...
1. M and N are points in the sides PQ and PR respectively of a PQR. If PN = 4.8 cm, NR =
1.6 cm, PM = 4.5 cm and MQ = 1.5 cm, then find whether MN||QR or not
4. Given the linear equation 3x 4 y 9 write another linear equation in these two variables such that the geometrical representation of the pair so formed is:
(i) intersecting lines
(ii) coincident lines
5. Find the smallest number of 5 digits which is exactly divisible by 12, 16 and 20
1.6 cm, PM = 4.5 cm and MQ = 1.5 cm, then find whether MN||QR or not
4. Given the linear equation 3x 4 y 9 write another linear equation in these two variables such that the geometrical representation of the pair so formed is:
(i) intersecting lines
(ii) coincident lines
5. Find the smallest number of 5 digits which is exactly divisible by 12, 16 and 20
6. What should be added in the polynomial x3 2x2 3x 4 so that it is completely divisible x2 – x?
8. Solve the following pairs of linear equation by the substitution method: 0.4x + 0.5y = 2.3
0.3x + 0.2y = 1.2
0.3x + 0.2y = 1.2
Answered by
1
putting x=3 in given equation,
2(3)²+3+k= 0
2×9+3+k=0
18+3+k=0
21+k = 0
k = -21
2(3)²+3+k= 0
2×9+3+k=0
18+3+k=0
21+k = 0
k = -21
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