किस मान पर ((4a-5)x+30) का शून्यक (-2) होगा?
For which value will the zero of ((4a-5)x+30) be (-2)?
Explanation opens after your attempt
A. (a=5)
Concept
If the zero is (-2), then (-2(4a-5)+30=0). This gives (a=5).
Why this answer is correct
The correct answer is A. (a=5). If the zero is (-2), then (-2(4a-5)+30=0). This gives (a=5).
Exam Tip
शून्यक (-2) होने पर (-2(4a-5)+30=0) होगा। इससे (a=5) मिलता है।
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