Answer:
The roots are real and unequal (3, -3)
Step-by-step explanation:
x²-9=0
ax²+bx+c=0
Comparing we get,
a= 1
b= 0
c = -9
Determinant: b²-4ac
= 0² - 4(1)(-9)
= 36>0
D > 0
Therefore, the equation has real and unequal roots.
Algebraic identity:
x² - a² = (x-a)(x+a)
Using this identity
x²-9 = (x+3)(x-3)
Roots are 3 and -3 which are real and not equal to each other
Hope this answer helps you ..
Answer: The answer is B
Step-by-step explanation:
Answer:
A) 20
Step-by-step explanation:
Answer:
Step-by-step explanation:
A(4,1),B(3,2),C(1,1)
Reflection over y-axis (x,y)→(-x,y)
A'(-4,1),B'(-3,2),C'(-1,1)
Translation 5 units down (x,y)→(x,y-5)
A"(-4,-4),B"(-3,-3),C"(-1,-4)
Answer:
u
Step-by-step explanation:
