0 reads0 ratings0 helpful
The length of a rectangular garden is \(x+5\) metres and its breadth is \(x+3\) metres. Which quadratic expression represents its area?एक आयताकार बगीचे की लंबाई \(x+5\) मीटर और चौड़ाई \(x+3\) मीटर है। उसके क्षेत्रफल को दर्शाने वाला द्विघात व्यंजक कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(x^2+8x+15\)\(x^2+8x+15\)
Area = length × breadth = \((x+5)(x+3)\) = \(x^2+3x+5x+15=x^2+8x+15\). The option \(x^2+15\) misses the middle terms. Exam tip: add both cross terms carefully.क्षेत्रफल = लंबाई × चौड़ाई = \((x+5)(x+3)\) = \(x^2+3x+5x+15=x^2+8x+15\)। \(x^2+15\) में मध्य पद छूट जाता है। परीक्षा में दोनों क्रॉस-पद जोड़ें।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
