Use the product to simplify the expression

When multiplying exponents with the same base, u keep the base, and add the exponents.

y^5 * y^4they both have the same base (y)...so keep it, and add exponents

y^5 * y^4 = y^(5 + 4) = y^9 <==

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5

20y5 times 2 is 1010 times -2 is -20, plus y