7y-2=5y+4
+2 +2
__________
7y= 5y + 6
-5y -5y
__________
2y= 6
Y=3
3x+2=23
3x =21
x= 7
7(3) -2= 5(3)+4
19=19
x=19
3(7)+2=23
23= 23
Y=23
Adding and subtracting property
Answer:
The chevrolet and the honda
Step-by-step explanation:
divide both by 8
(-x+9)(-x-9) - prefect square
(xy + x)(xy + x) - perfect square
(2x-3)(-3+2x) - not a perfect square
(16- x²)(x2 – 16) - not a perfect square
(4y? +25)(25+4y?) - not a perfect square
Evaluate: x⁻² for x = -3
The negative sign of the exponent signifies that the number is a denominator with 1 as the numerator.
The number is in negative form, it becomes a positive number because it is squared. negative number times negative number equals positive number.
x⁻² where x = -3 ⇒⇒ -3⁻² = 1/-3² = 1/9
