(2.5) POWER OF .5
It is given that
S
=
n
(
a
+
l
2
)
S=n(
a+l
Find the value of S when
20
n=20
−
5
a=−5
...
3 2 x y – + =z 2 , 2 3 x y + = – z 5 , x y + + z =6
27+76
.6667
12910514.2204
2689239
185928.1379
.33256079634668
3390590779776
.2689239
.53606427120402
.4670534
.282...
y+1=2x
x=6
find y
⦁ Simplify.
5a – 2a + a
3b 4b
10 10
x=0
