[-4*2(2x+5)]
-8(2x+5).....now just expand
Can someone point me in the right direction on how to solve this problem?
Which algebraic expression is equivalent to the expression?
-4(2x + 5)2
2 answers
Nope. This is an example of poor notation. What he means is
-4(2x + 5)^2
but doesn't know how to write it. You'll see this often here.
So, to expand that we have
-4((2x)^2 + 2*2x*5 + 5^2)
= -4(4x^2+20x+25)
= -16x^2 - 80x - 100
-4(2x + 5)^2
but doesn't know how to write it. You'll see this often here.
So, to expand that we have
-4((2x)^2 + 2*2x*5 + 5^2)
= -4(4x^2+20x+25)
= -16x^2 - 80x - 100
1 answer