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Beginning Algebra
Specifically for introductory questions about algebra (Algebra I).
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I
Why sinx.sinx = sin²x not sin²x²?
Indranil
Jul 6, 2018
Replies
3
Views
602
Jul 6, 2018
Dr.Peterson
T
Word problem: At 6am, 2 ships leave a port, one going S at 18kph, other going W at 23
Therese0904
Jul 5, 2018
Replies
2
Views
599
Jul 5, 2018
Jomo
A
If f(x)=f(x-1)+5x and f(1)=2 then how to find f(20)?
AlphaCentauri
Jul 4, 2018
Replies
4
Views
582
Jul 4, 2018
TomHE
T
I
If x^2 = root (y), then how to calculate the value of x?
Indranil
Jul 2, 2018
Replies
16
Views
1K
Jul 3, 2018
mmm4444bot
M
Very difficult question: Resolve x^8 + y^8 into real quadratic factors.
MathsLearner
Jun 18, 2018
Replies
7
Views
698
Jul 2, 2018
JeffM
J
I
If y^2 = 4, then why do we get two values +2 and -2 of 'y'?
Indranil
Jul 2, 2018
Replies
3
Views
346
Jul 2, 2018
tkhunny
I
Why X^(1/2) = root X and X^(-1/2) = 1/root x?
Indranil
Jun 29, 2018
2
Replies
21
Views
2K
Jul 2, 2018
Indranil
I
D
Is this a valid expression? x/x-1 = 1/x-1 It would appear that x=1 but that would...
dogleg
Jun 28, 2018
2
Replies
21
Views
2K
Jun 30, 2018
dogleg
D
I
If f = A (dv/dx), then how to calculate the value of f?
Indranil
Jun 28, 2018
Replies
11
Views
758
Jun 29, 2018
Jomo
S
When to use x^2 coefficient in bracket and when to factorise outside bracket
Simonsky
Jun 22, 2018
Replies
11
Views
968
Jun 26, 2018
Dr.Peterson
B
Simplify the Surd (3+2sqrt(5))/sqrt(5): my answer is (3sqrt(5) + 10)/5
bumblebee123
Jun 19, 2018
Replies
4
Views
573
Jun 26, 2018
bumblebee123
B
B
finding the value of this equation: find the value of m when : sqrt(128)= 2^m
bumblebee123
Jun 25, 2018
Replies
1
Views
370
Jun 25, 2018
MarkFL
C
Proving Abolutee-Value Identities: |x^2| = |x|^2, |x^n| = |x|^n, |x| = sqrt{x^2}, ...
char007
Jun 23, 2018
Replies
3
Views
784
Jun 23, 2018
Dr.Peterson
G
Rectangle has area 96 sq. ft.; if width is 4 ft less than length, what is perimeter?
girlpower
Jan 31, 2013
Replies
17
Views
15K
Jun 21, 2018
odizus
O
B
Quadratic equation and probability: bag contains n yellow balls, 7 white balls
bumblebee123
Jun 18, 2018
Replies
4
Views
589
Jun 19, 2018
Jomo
S
Confusion over inverse of a function (involution)
Simonsky
Jun 15, 2018
2
Replies
30
Views
2K
Jun 19, 2018
Simonsky
S
A
Induction proof: 1^3+2^3+...+n^3=(1+2+3+...+n)^2
Aion
Jun 9, 2018
Replies
14
Views
2K
Jun 19, 2018
kimmysawi
K
A
Set notation question: If A = {x∈ℕ: x is even } and B = {x∈ℕ: x is odd }...
Aion
Jun 18, 2018
Replies
1
Views
396
Jun 18, 2018
Dr.Peterson
I
Which one is bigger 1 g or 1.6605 X 10⁻²⁴ g ?
Indranil
Jun 16, 2018
Replies
5
Views
3K
Jun 18, 2018
Indranil
I
D
Rationalizing denominators using conjugate surds: Why use fraction w/ num. = denom.?
Deano
Jun 17, 2018
Replies
2
Views
382
Jun 17, 2018
Jomo
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