Algebra Practice Question and Answer
8 4 Q:
64805a7923e51f477704d402 Answer : 2. "
4 Q:
64660a6b0827e80a9f9a8cbf 4 Q:
6409cf73a37bb1a5e16e1b62 4 Q:
6409ca61df653d9ac22bc376 4 Q:
648af3112ad67965a24a97ee 4 Q:
5f1e9da626299776aa421043 4 Q:
63861340a72dd915f318247d 4 Q:
6447959fdf70e0688c8264bb
Q: What is the value of a2+b2+c2-2ab-2bc+2ca?
954 064805a7923e51f477704d402
64805a7923e51f477704d402- 1(2a + b + c)2false
- 2true
(a − b + c)2
- 3false
(a − b − 2c)2
- 4false
(a + 2b − c)2
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Answer : 2. "(a − b + c)2
"
Q: If x = z = 225 and y = 226 then the value of : x3 + y3 + z3 – 3xyz is
949 064660a6b0827e80a9f9a8cbf
64660a6b0827e80a9f9a8cbf- 1765false
- 2676true
- 3576false
- 4674false
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Answer : 2. "676 "
Q: If a = 2·361, b = 3·263 and c = 5·624, then the value of a3 + b3 – c3 + 3abc is
924 06409cf73a37bb1a5e16e1b62
6409cf73a37bb1a5e16e1b62- 135·621false
- 20true
- 319·277false
- 41false
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Answer : 2. "0"
Q: If a + b = 1 and a3 + b3 + 3ab = k, then the value of k is
922 06409ca61df653d9ac22bc376
6409ca61df653d9ac22bc376- 11true
- 23false
- 35false
- 47false
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Answer : 1. "1 "
Q: if x4+y4+x2y2=21 and x2+y2-xy=7, then what is the value of $${x\over y}+{y\over x}=?$$
919 0648af3112ad67965a24a97ee
648af3112ad67965a24a97ee- 1$$15\over 8$$false
- 2$$3\over 2$$true
- 3$$27\over 28$$false
- 4$$3\over 4$$false
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Answer : 2. "$$3\over 2$$"
Q: If a ≠ b, then which of the following statement is true ?
906 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. "$${a+b\over 2}> \sqrt{ab} $$"
Q: A complete factorization of x4+64 is
892 063861340a72dd915f318247d
63861340a72dd915f318247d- 1$$\left(x^2+8 \right)^2 \ $$false
- 2$$\left(x^2+8 \right) \ (x^2-8)$$false
- 3$$\left(x^2-4x+8 \right) \ (x^2-4x-8)$$false
- 4$$\left(x^2+4x+8 \right) \ (x^2-4x+8)$$true
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Answer : 4. "$$\left(x^2+4x+8 \right) \ (x^2-4x+8)$$"
Q: If x+y+z=10, x2+y2+z2=30, then the value of x3+y3+z3-3xyz is _________.
884 06447959fdf70e0688c8264bb
6447959fdf70e0688c8264bb- 1−10false
- 2−70false
- 3−50true
- 4−30false
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Answer : 3. "−50"
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