1) (a+b)²-5(a+b)-6
2) (p²-3q²)-16(p²-3q²)-63
3) (x²-2x)²+5(x²-2x)-36
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Answer:
helo guys its your answer
Step-by-step explanation:
If a=5+2√6 and b=1/a , then what will be the value of a2+b2 ? Get the ... =( 25+24+10√2)+1(5-2√6)²/(5+2√6)²(5-2√6)² ... The cost of 16/3 metres of cloth is Rs 256/3.(2)3.0/5. 3. baliram16 ... p+q=5. squaring both sides. p²+q²=5². (p+q)²=25 ... (a+ b)^2 = a^2 + b^2 + 2(a)(b) ... if x=-1, find the value of x²+2x+1plZ answer step by step plZ
Answer:
1) (a + b)² - 5(a + b) - 6
= x² - 5x - 6 [a + b = x]
= x² - (6-1) x - 6
= x²- 6 x + x - 6
= x (x - 6) + 1 (x - 6)
= ( x - 6) (x + 1)
=> (a + b - 6) (a + b - 1)
2) (p² - 3q²)² - 16 ( p²- 3² ) + 63
= x² - 16x + 63 [p²-3q²=x]
= x² - (9 + 7) x + 63
= x² - 9 + 7 x + 63
= x (x - 9) - 7 (x - 9)
= (x - 9) (x - 7 ) [x=p²-3q²]
= (p² - 3q² - 9) (p²- 3q²- 7)
3) ( x²- 2x )² + 5 ( a²- 2x) - 36
= y² + 5y - 36 [x²-2x=y]
= y² + (9 - 4)y - 36
= y (y+9) + 4 (y + 9)
= (y + 9) (y - 4)
= (x ²- 2x + 9 ) (x² - 2x - 4)