Question

3
3] Find the value of discriminantof of the equation x2+7x-1=0​

Answer 1

Answer:

Given

x {}^{2} + 7x - 1 = 0x

2

+7x−1=0

here , a= 1, b= 7 and c= -1

since

b {}^{2} - 4acb

2

−4ac

is the discriminant of quadratic equation

so 7^2 - 4×1×(-1) = 49+4 = 53.

hope it helps you

Answer 2

Answer:

Question :-

• Find the value of discrimination of the equation x² + 7x - 1 = 0

Answer :-

➪ x² + 7x - 1 = 0

Comparing the above equation with,

➙ ax² + bx + c = 0,

we get,

a = 1, b = 7, c = -1

∴ b² - 4ac

➻ (7)² - 4.1.(-1)

➻ 49 + 4

∴ b² - 4ac

➻ 53