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Leya [2.2K]
3 years ago
8

Can someone please help me with these ?

Mathematics
1 answer:
Pavel [41]3 years ago
7 0

Answer:

Step-by-step explanation:

11)  \sqrt{8x+33} =3\\8x+33=9\\8x=-24\\x=-3

Subtract 4 from both sides.  Square each side.  Subtract 33 from both sides.  Divide each side by 8.  Your answer is -3.

12)  7x-17=x^2-2x+1\\0=x^2-9x+18\\0=(x-6)(x-3)\\x=6,    x=3

Square both sides.  Put all numbers on one side of the equation so that you can be equal to zero.  Factor out and solve for x.

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Step-by-step explanation:

12 = 2 × 2 × 3

18 = 2 × 3 × 3

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Now

Common factor = 2

Remaining factor = 2 × 3 × 2 × 3 × 7

LCM = RF × CF

= 504

hence the lCM of 12 , 18 and 56 is 504...

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Step-by-step explanation:

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