1. Multiply.(7x+3)(4x−5)2. Factor.49x^8−16y^143. Factor.7x^2+16x+4

1. (7x+3)(4x−5) = multiply everything by each other than combine like terms= 28x^2-23x-152. 49x^8−16y^14rewrite 49x^8 as (7x^4)^2, rewrite -16y^14 as -(4y^7)^2 then factor to get (7x^4 +4y^7)(7x^4 -4y^7)
3. 7x^2+16x+4  = (7x+2)(x+2)