Question

[(2x+3)+(x+5)]2+[(2x+3)-(x+5)]2=10x2+92

Answer 1

Answer:

Step-by-step explanation:

(2x+3+x+5) 2+( (2x+3)-x+5) ) 2=10x  2+92

2(3x+8)+2(2x-(x+5)+3)=10x :2+92

Simplify  2x+3+x+5 3x+8

2(3x+8)+2(2x-(x+5+3)=10x :2+92

Multiply 2 by 10

2(3x+8)+2(2x+3-(x+5) )=20x+92

expand 2(3x+8)+2(2x+3-(x+5) )

8x+12=20x+92

Subtract 12 from both sides

8x+12-12=20x+92-12

Simplify

8x=20x+80

Subtract 20x from both sides

8x-20x=20x+80-20x

Simplify

-12x=80

Divide both side from -12

-12x/-12=80/-12

x= -20/3