Question

(y+7) ( y-10) please explain this question​

Answer 1

Answer:

there is multiplication of two equations

Step-by-step explanation:

the multiplication works like

(y+7)(y-10)

now y is multiplied with another y

so it becomes $y^{2}$

then first y is multiplied with (-10)

so it becomes $-10y$

now 7 is multiplied with second y

so it becomes $7y$

now 7 is multiplied with (-10)

so it becomes $-70$

Now,

  add the multiplied values

so it becomes  $y^2-10y+7y-70$

now $-10y+7y=-3y$

so the final answer is

$y^2-3y-70$

Hope it helps.