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defon
3 years ago
8

I don't get this can some body help me

Mathematics
2 answers:
Tems11 [23]3 years ago
5 0

Answer:

the answer is x=5

number two answer is x=7

Step-by-step explanation:

x-4=36+12-x²=0

13x-40-x²=0

-x²-5x-8x+40=0

(x-5)×(x-8)

x=5

this is the number 1 sorry i can explain everything becuse is a lot

x-2=x²-8x+16

-x²+9x-14=0

x²-9x+14=0

x²-2x-7x+14=0

(x-2) (x-7)

x=7

Travka [436]3 years ago
3 0

Step-by-step explanation:

1) \:  \:  \sqrt{x - 4}  + x = 6 \:  \:  \: .....square \: all \\ (x - 4) +  {x}^{2}  = 36 \:  \:  \:  simplfy \:  \: and \: rearrange\\  {x}^{2}  + x - 40 = 0  \:  \: quadatric \: eq\\ 2)follow \: same \: steps

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