Which quadratic equation is equivalent to (x + 2)2 + 5(x + 2) – 6 = 0?
2 answers:
Answer:
u2 + 5u – 6 = 0 where u = (x + 2)
Quadratic is in the form
ax^2+bx+c=0
so distribute and stuff and simplify
remember
a(b+c)=ab+ac
(x+2)^2+5(x+2)-6=0
remember order of opertaions
(x+2)(x+2)+5(x+2)-6=0
x^2+4x+4+5x+10-6=0
add like terms
x^2+9x+8=0
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1/2 and 4/8! Both are equivalent!
Answer: x = -2, y = -4
(WORK SHOWN BELOW)
Answer:
5:6
Step-by-step explanation:
Your answer would be 4500.
2x - y = 3 = x=0.5y+1.5
x+2y = -6 = x=−2y−6
