The probability of getting at most 2 tails is 7/8
Answer:
-1960
Step-by-step explanation:
The expression on the left expands to ...
(4x -7)² = (4x)² +2(4x)(-7) +(-7)² = 16x² -56x +49
Matching coefficients, you have ...
Then the expression c(b+a) evaluates to ...
49(-56+16) = 49(-40) = -1960
1h 35min + 1h 35min = 3h 10min
Answer:
a) (f+g)(x) = 6x^2 +6x -10
b) (f-g)(x) = 6x^2 -2x -4
Step-by-step explanation:
a. (f+g)(x) = f(x) +g(x) = (6x^2 +2x -7) +(4x -3)
(f+g)(x) = 6x^2 +6x -10
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b. (f-g)(x) = f(x) -g(x) = (6x^2 +2x -7) -(4x -3)
(f-g)(x) = 6x^2 +2x -7 -4x +3
(f-g)(x) = 6x^2 -2x -4
Its basically telling you to multiply 3x+2 × 7x+6
21x^2+18x+14x+12
21x^2+32x+12
