How do i solve the following equations giving the answers either exactly or to 3 significant figures?
a)3x + 5 = 2x – 1
b)(x^2 + 9) / 2 = 10
c)x^2 = 4 (x – 1)
d)2^x = 5
e)3^x+1 = 7
What do you not understand about thse euqations. They seem pretty simple. Please be dtailed.