<span>Simplifying
(2x + -7y ) = 0
Multiply
(2x + -7y) * (x + y) </span><span>
(2x * (x + y) + -7y * (</span><span>x + y)) = 0
</span>((x * 2x + y * 2x) + -7y * (x + y)) = 0<span>
</span>Reorder the terms:
((2xy + 2x2) + -7y * (x + y)) = 0
((2xy + 2x2) + -7y * (x + y)) = 0
(2xy + 2x2 + (x * -7y + y * -7y)) = 0
(2xy + 2x2 + (-7xy + -7y2)) = 0<span>
Reorder the terms:
(2xy + -7xy + 2x2 + -7y2) = 0
</span>
<span>Combine like terms: 2xy + -7xy = -5xy
(-5xy + 2x2 + -7y2) = 0
</span>Solving -5xy + 2x2 + -7y2 = 0<span>
Solving for variable 'x'.
Factor a trinomial.
(2x + -7y)(x + y) = 0
</span>
Answer:
8
Step-by-step explanation:
The polynomial is of degree 4·2 = 8, so there will be 8 roots. All of them will be complex.
9 because a squre has equal sizes and area is leignth times width and 3 x 3= 9
Answer:
y=3x+1
Step-by-step explanation:
slope is 3 (up 3 over 1) and y-intercept is 1
Answer:
Step-by-step explanation:
First subtract the 1/x2
Next subtract the fractions on the left
Next Multiply by x1
Next divide both sides by the remaining parts (not x1)
