Question

Answer this pleasee^^​

Answer 1

Answer:

15)x=-2 because

x-5=-21/3=-7

x=-7+5

x=-2

Answer 2

Step-by-step explanation:

3 (x-5) =-21

find -solve equation

3 (x-5) = 21

3x - 15 = -21

3x = -21+ 15

3x = -6

x = -6/3

x = -2

hence the answer is -2

17) solution _

=2x² - x² - y² - 3xy ) - (x² - y² + 3x²y²- 4xy²

= ( 2x²y - - x²y )+ (- x²y²-3x² y² ) + (3xy² +4xy²)

= x²y + (-4x²y²) + xy²= xy² - 4x²y- 4x²y²+ xy²

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