This equation can be written as
(v-8)(v+5)/ (v-8)(v-3)
= v+5/v-3
Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5
3 6 7 4
+ 6 7 8 9
~~~~~~~
10 4 6 3
Step-by-step explanation:
m<DAC is the exterior angle of the right angle triangle, where m<ACB and m<ABC are the interior angles of the triangle opposite to the exterior angle
Sum of the opposite interior angles is equal to the exterior angle
m<ACB+ m<ABC=m<DAC
a°+90°= 119°
a°=119-90°
a°=29°