( (x+4)(x-9) ) का विस्तार कौन सा है?
Which is the expansion of ( (x+4)(x-9) )?
Explanation opens after your attempt
A. \(x^2-5x-36\)
Concept
(4+(-9)=-5) and \(4\times(-9)=-36\). Exam tip: add signs carefully.
Why this answer is correct
The correct answer is A. \(x^2-5x-36\). (4+(-9)=-5) and \(4\times(-9)=-36\). Exam tip: add signs carefully.
Exam Tip
(4+(-9)=-5) और \(4\times(-9)=-36\)। परीक्षा में चिन्हों को ध्यान से जोड़ें।
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