## taranicolee one year ago can someone answer this quick question, i am having a brain bubble.... for 2(5x-4)^2 would you foil 5x-4 thennn multiply it by 2 or should i multiply thennn foil?

1. satellite73

"foil" first order 'o operations say exponents first, multiplication second

2. satellite73

$2(5x-4)(5x-4)$in other words

3. taranicolee

so i would take (10x^2-20x-20x+16) and multiply it by two to get 20x^2+80x+32?

4. satellite73

yes, except that that is not correct

5. satellite73

the first term is wrong since $$5x\times 5x=25x^2$$ and not $$10x^2$$

6. taranicolee

hahah oooops. 5 x 5 is 25....

7. taranicolee

yeah hahah. ooopsie. but thank you so much!!

8. satellite73

also the middle term should be $$-80x$$ not $$+80x$$

9. taranicolee

thank you! ((:

10. satellite73

yw