Question

The area is the product of the tablet length, 22+2x, and the tablet width, 17+2x. This product equals 374+78+4x^2 I want to know how the got that.

Answer 1

@hoblos can you help?

Answer 2

all i need to know how they got the 374+78+4x^2

Answer 3

374+78+4x^2
or 374+78x+4x^2

Answer 4

oh yea
my bad

Answer 5

374+78x+4x^2

Answer 6

ok
so we have to use
(a+b)(c+d) = a(c+d) + b(c+d)

Answer 7

for a(c+d) , we have to distribute a into (c+d)
so we get ac + ad

Answer 8

so
(22+2x)(17+2x) = 22(17+2x) + 2x(17+2x)
= 22(17) + 22(2x) + 2x(17) + 2x(2x)

what do you get if you simplify now ?

Answer 9

374+44x+34x+4x^2

Answer 10

oh ok thanks

Answer 11

any time :)