Question

(2+3i)(2-3i) a and b​

Answer 1

Answer:

jt583+58233862*1352064-454ujrizvbfhrzdh79566'; vjyufhx

Answer 2

Answer:

13

Step-by-step explanation:

(2+3i)(2-3i)

=2²-(3i)² ( as

$(x + y)(x - y) = x {}^{2} - y {}^{2}$

)

4-(3²i²)

4-(9(-1)) ( as i²=-1)

4-(-9)

4+9

13