Answer:
- Angle e = Angle <em><u>a</u></em>
- Angle f = Angle <em><u>c</u></em>
- Angle a, b and c add upto <em><u>180</u></em><em><u>°</u></em><em><u> </u></em><em><u>,</u></em><em><u> </u></em>as they are on straight line.
- therefore Angle e , f and b also add upto <em><u>180</u></em><em><u>°</u></em><em><u> </u></em><em><u> </u></em>
<em><u>i</u></em><em><u> </u></em><em><u>hope</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>helped</u></em><em><u> </u></em>
2x²+5=13
subtract the 5 on both sides
2x²=8
divide by 2 on both sides
x²=4
put each side under the radical because of the exponent 2
√x²=√4
the radical cancels out the exponent 2; √4 = 2
x=2
Subtract 6 from the previous number