(a + b - c )(a + b + c )

Step-by-step explanation:

Hope this helps!

a²+b²-c²+2ab

Step-by-step explanation:

(x-y)(x+y)=x²-y²

[(a + b) - c ][(a + b) + c )=

=(a+b)²-c²

=a²+2ab+b²-c²

=a²+b²-c²+2ab

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )