HI there. I have a question. Can anyone help?
I have this "supose to be easy" maths question that I can not do.
7,3575 + 147,15x = 1036.8(x)(x)
Can any help me here...... The answer is: x=181.11 but how do I get that?

2. Originally Posted by ruanvr
HI there. I have a question. Can anyone help?
I have this "supose to be easy" maths question that I can not do.
7,3575 + 147,15x = 1036.8(x)(x)
Can any help me here...... The answer is: x=181.11 but how do I get that?
First what is the distinction between 147,15 and 147.15, that is what is the decimal seperator here. (In other words: sort out your notation)

Then this looks like a quadratic, bring everything over to the same side and then use whatever technique you have been shown for solving quadratics.

RonL

3. Originally Posted by ruanvr
HI there. I have a question. Can anyone help?
I have this "supose to be easy" maths question that I can not do.
7,3575 + 147,15x = 1036.8(x)(x)
Can any help me here...... The answer is: x=181.11 but how do I get that?
Your notation confuses me. I don't understand the commas, decimal point, the (x)(x). Check the problem again and try to restate it.

4. ## Possible solution

Assuming commas mean decimal points and (x)(x) means x squared, then I make the answer (one of them) to be 187.77 ish.

This is from using the quadratic formula:

$\displaystyle x = \frac {-b \pm \sqrt {b^2 - 4 a c}} {2 a}$

5. Originally Posted by ruanvr
HI there. I have a question. Can anyone help?
I have this "supose to be easy" maths question that I can not do.
7,3575 + 147,15x = 1036.8(x)(x)
Can any help me here...... The answer is: x=181.11 but how do I get that?
Hallo ruan! Ek sal aanneem jy verstaan afrikaans.

Ek sal ook moet aanneem dat jy net bietjie deurmekaar geraak het met jou kommas en punte.

$\displaystyle 7,3575 + 147,15x = 1036,8 x^2$

Herrangskik nou eers.

$\displaystyle 1036,8 x^2 - 147,15x - 7,3575= 0$

Nou gebruik die kwadratiese formule om op te los, want ons gaan erg sukkel om te faktoriseer!

$\displaystyle x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$\displaystyle x = \frac{+147,15 \pm \sqrt{(-147,15)^2 - 4(1036,8)(-7,3575)}}{2(1036,8)}$

Nou ja, van hier af behoort dit vir jou maklik te wees om op te los!

Boonop die wortels is:
0,18110
-0,03918