${(2x + 3y)}^{2} + {(2x - 3y)}^{2} \\ (2x + 3y)(2x + 3y) + (2x - 3y)(2x - 3y) \\ 2x(2x + 3y) + 3y(2x + 3y) + 2x(2x - 3y) - 3y(2x - 3y) \\ {4x}^{2} + 6xy + 6xy + {9y}^{2} + {4x}^{2} - 6xy - 6xy + {9y}^{2} \\ {4x}^{2} + 12xy + {9y}^{2} + {4x}^{2} - 12xy + {9y}^{2} \\ {4x}^{2} + {9y}^{2} + {4x}^{2} + {9y}^{2} \\ {8x}^{2} + {18y}^{2} \\ 2( {4x}^{2} + {9y}^{2} ) \\ 2( {2}^{2} {x}^{2} + {3}^{2} {y}^{2} ) \\ 2({(2x)}^{2} + {(3y)}^{2}) \\$

4 0

2 years ago

If 5% more than a is b, and b is 15% less than, what is the ratio of a to c

damaskus [11]

The answer is is 24 5 +9=15+9=24

3 0

3 years ago

Two sides of a triangle have the same length. The third sido measures 7 m less than twice the common length. The perimeter of th

lesantik [10]

Answer:

6 m, 6 m, 5 m

Step-by-step explanation:

If x is the common length then the perimeter is the sum of side lengths:

x + x + (2x-7) = 17

4x = 24 . . . . . . . . . add 7

x = 6 . . . . . . . . . . divide by 4

2x -7 = 12 -7 = 5 . . . find the length of the 3rd side

The side lengths are 6 m, 6 m, and 5 m.

5 0

2 years ago

Lin wants to know how many games teenagers in the United States have on their phones.

Ahat [919]

I would say 15 because most of the games are social media and some of them are puzzle games because they get bored

7 0

3 years ago