For the arbitrary value of a0, a1, and a2,
it was found that a1=a2,
anda2=a1=t.

a0 + 2a1 - a2 = 0

when isolate the a0
a0 = -2a1 + a2
a0 = -2a1 +a1
a0 = -2t + t

how did a0 became -3t, shouldn't it also be t?

How many verticies does a triangular prims have

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)