Answer:
(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)(4 + 21)(3-51) = (3-51)(4+ 21)
Explanation: