Question

1 If x = 7 is the solution of bx2 – 13x – 7 = 0 , then the value of b is ​

Answer 1

Step-by-step explanation:

$x = 7 \\ \\ b {x}^{2} - 13x - 7 = 0 \\ = > b {(7)}^{2} - 13(7) - 7 = 0 \\ = > 49b - 91 - 7 = 0 \\ = > 49b = 98 \\ b = 2$

Answer 2

bx² - 13x - 7 = 0 , If x = 7 . Then find b.

b(7)²- 13(7) - 7 = 0

49b - 91 - 7 = 0

49b - 98 = 0

49b = 98

Therefore, b = 98/49 = 2

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