यदि ((x-4)(x+9)=0) है तो मूल कौन से होंगे?
If ((x-4)(x+9)=0), what are the roots?
Explanation opens after your attempt
C. (4) और (-9)(4) and (-9)
Concept
By the zero product rule, (x-4=0) or (x+9=0). Therefore the roots are (4) and (-9).
Why this answer is correct
The correct answer is C. (4) और (-9) / (4) and (-9). By the zero product rule, (x-4=0) or (x+9=0). Therefore the roots are (4) and (-9).
Exam Tip
शून्य गुणनफल नियम से (x-4=0) या (x+9=0) होगा। इसलिए मूल (4) और (-9) हैं।
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