Find x, if 3x − 5(y + x ) ^2 = 16 and 4x + 2(y + x )^ 2 = 30

x = 7

Step-by-step explanation:

Start by solving for which is a common expression for both equations. Then in the first equation:

and in the second equation:

Now we make the two expressions equal so we get:

they are simplified

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,