Question

simplify and verify the result for x is equal to 2 and y=-1 (x+3y) (2x+3y)+(x+5y)+(x-y)​

Answer 1

Answer:

-1

Step-by-step explanation:

(x+3y)(2x+3y)+(x+5y)+(x-y)

(2+3*-1)(2*1+3*-1)+(1+5*-1)+(1-(-1))

(2-3)(2-3)+(1-5)+2

-1*-1+-4+2

1+2-4

3-4

-1

Answer 2

Answer:

ஃ ( x + 3y ) + ( 2x + 3y ) + ( x + 5y ) + ( x - y ) = -16

Step-by-step explanation:

( x + 3y ) + ( 2x + 3y ) + ( x + 5y ) + ( x - y )

Given, x = 2

y = -1

= ( 2 + 3 × ( -1 )) + ( 2 × 2 + 3 × ( -1 )) + ( 2 + 5 × ( -1 )) + ( 2 - ( -1 ))

= ( -5 ) + ( -7 ) + ( -7 ) + 3

= ( -12 ) + ( -7 ) + 3

= ( -19 ) + 3

= -16