class 10Tu Ques plz solve it Ch 4
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Step-by-step explanation:
√(2x + 9) + x = 13
√(2x + 9) = 13 - x
• Squaring both side
[√(2x + 9)]² = (13 - x)² x² - 20x - 8x + 160 = 0 x = 20 or 8
2x + 9 = 169 + x² - 26x
x² - 28x + 160 = 0
x(x - 20) - 8(x - 20) = 0
(x-20) (x - 8) = 0
4√3 x² + 5x - 2√3 = 0
4√3 x² + 8x - 3x-2√3 = 0.
4x(√3x + 2) -√3(√3x + 2) = 0
(√3x + 2) (4x - √3)= 0
x = -2/√3 or √3/4
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