(2j+7)(2j−7)
=(2j+7)(2j+−7)
=(2j)(2j)+(2j)(−7)+(7)(2j)+(7)(−7)
=4j2−14j+14j−49
=4j2−49
Answer:
405 / 125
Step-by-step explanation:
3.256
= 3256 / 1000
= 407 / 125
Answer:
yes, its a heptagon
Step-by-step explanation:
3a - 1 = 12
+1 +1
—————-
3a = 13
—- ——
3 3
—————
A=4 1/3
