Answer:
True
Step-by-step explanation:
Please give brainliest :)
Answer:
x = 1± 3i
Step-by-step explanation:
x^2-2x+10=0
We can complete the square to solve by subtracting 10 from each side
x^2-2x+10-10=-10
x^2 -2x = -10
We need to add (2/2) ^2 to each side or 1
x^2 -2x+1 = -10 +1
x^2 -2x+1 = -9
The left side factors into (x- (2/2) ) ^2
(x-1) ^2 = -9
Take the square root of each side
sqrt((x-1) ^2 =± sqrt(-9)
x-1 = ±sqrt(-1) sqrt(3)
Remember the sqrt(-1) = i
x-1 = ± 3i
Add 1 to each side
x-1+1 = 1± 3i
x = 1± 3i
Answer:
(i) (b) RC
(ii) (d) 1/4 ar(ΔABC)
(iii) (b) 39 cm
(iv) (a) 90°
Step-by-step explanation:
(i) (b) RC
(ii) (d) 1/4 ar(ΔABC)
(iii) (b) 39 cm
(iv) (a) 90°
Answer:
12
Step-by-step explanation:
Given
÷
Leave the first fraction, change division to multiplication and turn the second fraction upside down, that is
× ← cancel 4 and 16 by 4
= × = = = 12
What does the <span>^ mean? I feel so stupid</span>