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Questions
253
Réponses
99
256 Questions
128 Answers
0
87
0
+818
system
Let c be a real number, and consider the system of quadratic equations
y = 6x^2 - 9x + c - 3x^2 + 17x
y = 5x^2 - 3x - 2x^2 + 10x - 18
For which values of c does this system have:
(a) Exactly one real
lire plus ..
maximum
11 nov. 2023
0
106
0
+818
quadratic equation
Let $a$ and $b$ be the roots of the quadratic $x^2 - 5x + 3 = 4x^2 - 8x + 23$ Find the quadratic whose roots are $a^2$ and $b^2.$
maximum
11 nov. 2023
0
79
1
+818
help algebra
Let a and b be the solutions to 7x^2 + x - 5 = 2x^2 - 3x + 1. Compute (a - 4) + (b - 4).
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maximum
11 nov. 2023
0
73
0
+818
need help
Let $u$ and $v$ be the solutions to $3x^2 + 5x + 7 = x^2 - 6x + 8$ Find $1/u + 1/v$.
maximum
11 nov. 2023
0
89
0
+818
Solve
Let a and b be the solutions to 5x^2 - 11x + 4 = 2x^2 - 7x + 9 + 7x^2 - 14x - 11. Find 1/a + 1/b.
maximum
11 nov. 2023
0
92
0
+818
expand
Expand (a + 2)(3a^2 - 2a - 12)(a^2 - 2a + 1).
maximum
11 nov. 2023
0
88
1
+818
quadratic
Fill in the blanks to make a quadratic whose roots are $1$ and $-1.$
x^2 + ___ x + ___
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maximum
11 nov. 2023
0
109
0
+818
help algebra
Find the largest value of $x$ such that $3x^2 + 17x + 15 = 2x^2 + 21x + 12 - 5x^2 + 17x + 34.$
maximum
11 nov. 2023
0
72
0
+818
help counting
In the array below, in how many different ways can we start with the letter A and move from letter to letter (horizontally, vertically, or diagonally), to spell the word "ARCH"?
A
RRR
CCCCC
lire plus ..
maximum
11 nov. 2023
0
86
0
+818
linear
Fill in the blanks with integers, and select the correct operator ($+$ or $-$), to give an equation whose graph is the line that passes through the point $(-1,8)$ and is parallel to the graph of $4x + 3y = -8 - x - 15y.$
maximum
5 nov. 2023
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#1
+818
-1
Do not post AoPS homework.
maximum
20 janv. 2025
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11
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