Which expression is equivalent to 4a + 10? 4(a + 5) 2(2a + 8) 4(a + 8) 2(2a + 5)

answer  is d:  2(2a+5)

one way is to just multply them out but the easier way is to undistribute to see the answer so remember distributive property a(b+c)=ab+ac 4a+10 is obvously a product the common factor is 2 so 4a+10=2(2a)+2(5) undistribute 2 2(2a)+2(5)=2(2a+5) reverse distribute answer is last option