Home›MPPSC Forest›State Forest Service Mains Exam›Section 'B': Forestry and General Science›UNIT-10: Elementary Mathematics and General Mental Ability›Factors of easy trinomial expressions of second degree›The discriminant of the quadratic equation $x^2 - 8x + 4 = 0$ is

The discriminant of the quadratic equation x2−8x+4=0x^2 - 8x + 4 = 0x2−8x+4=0 is

20243M#mppsc-forest#pyq#mcq#2024
A.24
B.48Correct
C.64
D.32
Explanation & Solution

Correct Answer: (B) 48

For a standard quadratic equation ax^2 + bx + c = 0, the discriminant is D = b^2 - 4ac. For x^2 - 8x + 4 = 0, a = 1, b = -8, c = 4; hence D = (-8)^2 - 4(1)(4) = 64 - 16 = 48.

हिंदी में प्रश्न एवं आदर्श उत्तर

वर्ग समीकरण x2−8x+4=0x^2 - 8x + 4 = 0x2−8x+4=0 का विविक्तकर है

A.24
B.48सही
C.64
D.32

सही उत्तर: (B) 48

मानक वर्ग समीकरण ax^2 + bx + c = 0 के लिए विविक्तकर D = b^2 - 4ac होता है। समीकरण x^2 - 8x + 4 = 0 में a = 1, b = -8, c = 4 है; अतः D = (-8)^2 - 4(1)(4) = 64 - 16 = 48।

See this question in context →
Free Android App

Practice Better on the StatePYQ Mobile App

⚡ Error Diary · ⏱ Timed Mains Answer Pacer · 📴 Offline Revision Vault

Get it onGoogle Play