Addi a+b + 20 * 2a-6-46 3a- —
2btc
Answers
Answered by
0
Answer:
4a2 - 9b2 is a difference of squares and factors to (2a + 3b)(2a - 3b)
the (2a + 3b) in the numerator and denominator cancel
2a - 3b = 1/9
Similar questions