pantojaiv90
21.01.2021 •
Mathematics
Which of the following angles can you add together to equal angle d Angle b and Angle a and Angle b Angle a and Angle b and Angle c Angle a and Angle c Angle
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Ответ:
2x²=200
dividing both sides by 2
x²=100
x²-100=0
we can write 100 as 10²
x²-10²=0
using the property (a+b)(a-b)=a²-b²
(x+10)(x-10)=0
x+10=0, x=-10
x-10=0, x=10
x=+10 and x=-10