(15-7)+(15-9)

7-9+15

7+9 - 15

15 – 7+9

15-(7+9)

7 - 15+9

DRAGADOPOP

DRAG AND DROP

АПТЕМ НЕРЕ

OPAGANDOROP

ANTEM HERE

add 7 and 9. then subtract 15

subtract 7 from 15. then add 9

the sum of 7 and 9 subtracted from 15

understand that i don't know the answers

will someone answer his question

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

2x^2+5x+17

your welcome. : )