1). If \( \Large x^{2}-3x+1=0 \) find the value of \( \Large x+\frac{1}{x} \)
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2). If \( \Large 2x^{2}+12x+18=0 \), what is the value of x ?
A). 3 |
B). 2 |
C). -3 |
D). -2 |
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3). If one root of \( \Large x^{2}-6kx+5=0 \) is 5, find the value of k.
A). \( \Large -\frac{1}{2} \) |
B). -1 |
C). 1 |
D). 2 |
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4). If one of the roots of quadratic equation \( \Large 7x^{2}-50x+k=0 \) is 7, then what is the value of k?
A). 7 |
B). 1 |
C). \( \Large \frac{50}{7} \) |
D). \( \Large \frac{7}{50} \) |
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5). Find the roots of the equation \( \Large 2x^{2}-11x+15=0 \)
A). \( \Large 3 \ and \ \frac{5}{2} \) |
B). \( \Large -3 \ and \ -\frac{5}{2} \) |
C). \( \Large 5 \ and \ \frac{3}{2} \) |
D). \( \Large -5 \ and \ -\frac{3}{2} \) |
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6). The quadratic equation whose roots are 3 and -1, is
A). \( \Large x^{2}-4x+3=0 \) |
B). \( \Large x^{2}-2x-3=0 \) |
C). \( \Large x^{2}+2x-3=0 \) |
D). \( \Large x^{2}+4x+3=0 \) |
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7). \( \Large x^{2}+x-20=0; y^{2}-y-30=0 \)
A). If x>y |
B). \( \Large If \ x \ge y \) |
C). lfx |
D). \( \Large If \ x \le y \) |
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8). \( \Large 225x^{2}-4=0; \sqrt{225y}+2=0 \)
A). If x>y |
B). \( \Large If \ x\ge y \) |
C). lfx |
D). If x = y or relation cannot be established |
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9). \( \Large \frac{4}{\sqrt{x}}+\frac{7}{\sqrt{x}}=\sqrt{x;} \) \( \Large y^{2}-\frac{ \left(11\right)^{\frac{5}{2}} }{\sqrt{y}} =0 \)
A). If x>y |
B). \( \Large If \ x\ge y \) |
C). lfx |
D). If x = y or relation cannot be established |
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10). \( \Large x^{2}-365=364; y-\sqrt{324}=\sqrt{81} \)
A). If x>y |
B). \( \Large If \ x \ge y \) |
C). lfx |
D). \( \Large If \ x \le y \) |
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