Question

What does (3 + deltax)squared equal? Please show workings

Answer 1

3+ deltax simply means theres a slight increase in the value of 3 but its unknown.

Answer 2

when its squared u will get 9 + delta square x + 6deltax

Answer 3

But why isn't it just 9 + deltaxsquared?

Answer 4

because of property in algebra (a+b)^2= a^2+b^2+ 2ab

Answer 5

have you learNT this formula ?

Answer 6

no. doesn it have a name that I can google for tutorials?

Answer 7

dear, in what class are you in?

Answer 8

I am an adult who has forgotten so much and is trying to learn by self. I don't know the name of stuff.

Answer 9

Laws of Exponents

(am)(an) = am+n
(ab)m = ambm
(am)n = amn
Fractional Exponents
a0 = 1
(am)/(an) = am-n
a-m= 1/(am)

Quadratic Formula

In an equation like ax2 + bx + c = 0

You can solve for x using the Quadratic Formula:

Quadratic Formulas
Binomial Theorem

(a + b)1 = a + b
(a + b)2 = a2 + 2ab + b2
(a + b)3 = a3 + 3a2b + 3ab2 + b3
(a + b)4 = a4 + 4a3b + 6a2b2 + 4ab3 + b4 ...and so on...

Difference of Squares

a2 - b2 = (a - b)(a + b)

Rules of Zero

0/x = 0 where x is not equal to 0.
a0 = 1
0a = 0
a*0 = 0
a/0 is undefined (you can't do it)

Answer 10

WOW thanks!

Answer 11

cut that// i will give you the link..
http://www.freemathhelp.com/algebra-formulas.html

Answer 12

Thankyou so much!!!!