Question

solve this question in the attachment . i need it it in hurry pls give full solution

Answer 1

Answer:

वायु प्रदूषण से कई तरह की बीमारियां मनुष्य को हो रही है। ध्वनि प्रदूषण भी एक गंभीर समस्या है। सड़कों में बढ़ते हुए गाड़ियों की ध्वनियों से मनुष्य को घुटन और सरदर्द जैसी बीमारियां होती रहती है। मनुष्य की स्वार्थ भावना की वजह से प्रदूषण जैसी समस्याएं उतपन्न हो रही है।

Answer 2

Step-by-step explanation:

x2-8x=20

Two solutions were found :

x = 10

x = -2

Rearrange:

x^2-8*x-(20)=0

Step by step solution :

Step 1 :

Trying to factor by splitting the middle term

1.1 Factoring x2-8x-20

The first term is, x2 its coefficient is 1 .

The middle term is, -8x its coefficient is -8 .

The last term, "the constant", is -20

Step-1 : Multiply the coefficient of the first term by the constant 1 • -20 = -20

Step-2 : Find two factors of -20 whose sum equals the coefficient of the middle term, which is -8 .

-20 + 1 = -19

-10 + 2 = -8 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -10 and 2

x2 - 10x + 2x - 20

Step-4 : Add up the first 2 terms, pulling out like factors :

x • (x-10)

Add up the last 2 terms, pulling out common factors :

2 • (x-10)

Step-5 : Add up the four terms of step 4 :

(x+2) • (x-10)

Which is the desired factorization

Equation at the end of step 1 :

(x + 2) • (x - 10) = 0

I hope it will help you...

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