Algebra Practice Question and Answer
8 4 Q:
6481a06723e51f4777094a8f 4 Q:
64be5ef0a2d4dcaf0448bd97 4 Q:
6409cb2636c856ead79cb357 4 Q:
648af48bb50f5316a46369ad 4 Q:
6447959fdf70e0688c8264bb 4 Q:
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Q: if $$x^4+{16\over x^4}=15617, x>0$$ then find the value of $$x+{2\over x}$$
1160 06481a06723e51f4777094a8f
6481a06723e51f4777094a8f- 1$$ \sqrt {121} $$false
- 2$$ \sqrt {127} $$false
- 3$$ \sqrt {129} $$true
- 4$$ \sqrt {123} $$false
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Answer : 3. "$$ \sqrt {129} $$"
Q: The expression $${15(\sqrt { 10}+\sqrt { 5})\over \sqrt { 10}+\sqrt { 20}+\sqrt { 40}-\sqrt { 5}-\sqrt { 80} }$$ is equal to:
1156 064be5ef0a2d4dcaf0448bd97
64be5ef0a2d4dcaf0448bd97- 1$$10(3+2 \sqrt { 5})$$false
- 2$$5+(2 \sqrt { 2})$$false
- 3$$5(3+2 \sqrt { 2})$$true
- 4$$5-(2 \sqrt { 5})$$false
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Answer : 3. "$$5(3+2 \sqrt { 2})$$"
Q: Out of the given responses, one of the factors of (a2 – b2 )3 + (b2 – c2) 3 + (c2 – a2) 3 is
1149 06409cb2636c856ead79cb357
6409cb2636c856ead79cb357- 1(a + b) (a – b)true
- 2(a + b) (a + b)false
- 3(a – b) (a – b)false
- 4(b – c) (b – c)false
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Answer : 1. "(a + b) (a – b) "
Q: if x+y =3 and $${1\over x}+{1\over y}= -{3\over 10}$$ then the value of (x2+y2) is :
1142 0648af48bb50f5316a46369ad
648af48bb50f5316a46369ad- 129true
- 228false
- 326false
- 434false
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Answer : 1. "29"
Q: If x+y+z=10, x2+y2+z2=30, then the value of x3+y3+z3-3xyz is _________.
1141 06447959fdf70e0688c8264bb
6447959fdf70e0688c8264bb- 1−10false
- 2−70false
- 3−50true
- 4−30false
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Answer : 3. "−50"
Q: If a = 34, b = c = 33, then the value of a3 + b3 + c3 – 3abc is
1132 06409caaf56c45fd8d39e6a8f
6409caaf56c45fd8d39e6a8f- 10false
- 2111false
- 350false
- 4100true
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Answer : 4. "100"
Q: If x + y + 3 = 0 , then find the value of x3+y3-9xy+9.
1129 06479ad4451bf194753eca662
6479ad4451bf194753eca662- 118false
- 236false
- 3-36false
- 4-18true
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Answer : 4. "-18 "
Q: If a ≠ b, then which of the following statement is true ?
1124 05f1e9da626299776aa421043
5f1e9da626299776aa421043- 1$${a+b\over 2}= \sqrt{ab} $$false
- 2$${a+b\over 2}> \sqrt{ab} $$true
- 3$${a+b\over 2}< \sqrt{ab} $$false
- 4All of the abovefalse
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Answer : 2. "$${a+b\over 2}> \sqrt{ab} $$"
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