*एका पेटीची किंमत (a - 7) रु.असून (a + 7) पेट्यांची एकूण किंमत किती?*
1️⃣ (a² - 14a + 49)रु.
2️⃣ (a² - 49)रु.
3️⃣ (a² + 14a + 49)रु.
4️⃣ (a² + 49)रु.
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Answer:
peti price
1 a-7
a+7 ?
then we have to use equal method,
1 -> a-7
a+7 -> x
–> [ (a+7) (a-7) ] / 1
= a(a-7) +7 (a-7)
= a²-7a+7a-49
= a²-49
ans = (2)
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