Maths 1 (Algebra) Set 1 2020 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

(A) 15

(B)  x(x + 5) = 4

Hint:

x (x + 5) = 4
โˆด xยฒ + 5x โ€“ 4 = 0
Here, x is the only variable and maximum index of the variable is 2.
a = 1, b = 5, c = โ€“ 4 are real numbers and a โ‰  0

(A) 7

Hint:

(C) 10

Hint:

Comparing 2xยฒ โ€“ 5x + 7 = 0 with axยฒ + bx + c = 0, we get a = 2 and b = โ€“ 5

   xยฒ โ€“ 15x + 54 = 0
โˆด xยฒ โ€“ 9x โ€“ 6x + 54 = 0
โˆด x(x โ€“ 9) โ€“ 6(x โ€“ 9) = 0
โˆด (x โ€“ 9) (x โ€“ 6) = 0
โˆด x โ€“ 9 = 0 or x โ€“ 6 = 0
โˆด x = 9 or x = 6
โˆด The roots of the given quadratic equation are 9 and 6.

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