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Alex777 [14]
2 years ago
5

Simplify the expressions and find the value:

Mathematics
1 answer:
Dahasolnce [82]2 years ago
3 0

Answer:

x(x−3)+2=x.x−3x+2 \\ =x2−3x+2 \\F or x=1 \\ putting \:  x=1  \: in  \: expression \\ x2−3x+2=(1)2−3(1)+2 \\ =1−3+2 \\ =3−3 \\ =0

Solve  \: 3y(2y−7)−3(y−4)−63 for y=−2 \\ First \:  simplify \:  it, \\ =6y2−21y−3y+12−63 \\ =6y2−24y−51 \\ Put \:  y=−2 \: =6(−2)2−24(−2)−51  \\  =6×4+48−51 \: 6×4+48−51 \\  24+48−51 \\ =21

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Step-by-step explanation:

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3 years ago
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3 years ago
10 men and 5 women are meeting in a conference room. Four people are chosen at random from the 15 to form a committee. (a) What
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Answer:

Step-by-step explanation:

Given

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3 years ago
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