यदि ((x-2)(x+7)=0) है तो मूल कौन से होंगे?
If ((x-2)(x+7)=0) then what are the roots?
Explanation opens after your attempt
C. (2) और (-7)(2) and (-7)
Concept
By the zero product rule (x-2=0) or (x+7=0). Hence the roots are (2) and (-7).
Why this answer is correct
The correct answer is C. (2) और (-7) / (2) and (-7). By the zero product rule (x-2=0) or (x+7=0). Hence the roots are (2) and (-7).
Exam Tip
शून्य गुणनफल नियम से (x-2=0) या (x+7=0) होगा। इसलिए मूल (2) और (-7) हैं।
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