Answer:
Step-by-step explanation:
4x^2 - 9 = 0
4x^2 = 9
2x = 3
x = +-3/2
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x = ±3/2
4x^2 - 9=0
Add 9 to each side
4x^2 -9+9 =0+9
4x^2 =9
Divide each side by 4
4x^2/4 = 9/4
x^2 = 9/4
Take the square root of each side
sqrt(x^2) = ±sqrt(9/4)
x = ±sqrt(9)/sqrt(4)
210 in²
6*2.5+6*6*2+(8+6)*2.5+10*2.5+1/2*6*8*2+6*2.5= 210 in²
= 11+3(-1)
= -14
The answer is -14.
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