Monday

December 22, 2014

December 22, 2014

Posted by **jennie cribzon** on Monday, May 21, 2012 at 9:28pm.

- maths -
**Jai**, Monday, May 21, 2012 at 10:11pmlet x = first number

let 8-x = second number

then we set up the equation. It says that the sum of their squares must be 34. thus,

x^2 + (8-x)^2 = 34

then we solve for x:

x^2 + 64 - 16x + x^2 = 34

2x^2 - 16x + 64 = 34

2x^2 - 16x + 30 = 0

x^2 - 8x + 15 = 0

since it's factorable, we can just factor this, and not use the quadratic formula:

(x-3)(x-5) = 0

x = 3 (first number)

8-x = 5 (second number)

if you get the x = 5, you will obtain same set of answers since 8-5 = 3.

hope this helps~ :)

**Answer this Question**

**Related Questions**

maths - Find the two numbers whose differences is 8 and the sum of their ...

math - (please explain with brief explanation) two squares have sides p cm and (...

math - (please give brief explanation to this sentence > two squares have ...

math - two squares have sides p cm and (p+5) cms. the sum of theirs squares is ...

MATH - A four by four grid of unit squares contains squares of various sizes (1 ...

Calc - A 100 inch piece of wire is divided into 2 pieces and each piece is bent ...

algebra - There are two-digit perfect squares whose square roots are the same as...

algebra - a wire of 16 inches cut into 2 pieces. Each piece bent into a square. ...

Maths - divide 27 into two parts such that their product is 176

counting - how many squares are in an 8x8 checkerboard? (the answer is not 64 ...