SSC CHSL 202181)If 49a2 + 25b2 = 30 and ab = 1, a, b > 0, then the value of (7a + 5b) is:
10
SSC CHSL 202182)If (7x + 3)3 + (x - 2)3 + 27(2x - 5)3 = 9(7x + 3) × (x - 2) × (2x - 5) then the value of 5x + 3 is:
8
SSC CHSL 202183)If x + y = 5 and x2 + y2 = 17 then the value of \((x-y)^2\) is equal to:
9
SSC CHSL 202184)If (3p - 5m) = 5 and pm = 6, then what is the value of (9p2 - 25 m2)?
±5√385
SSC CHSL 202185)If \(x-{1\over2x}=4\), then the value of \(\rm8x^3 - \frac{1}{x^3}\) will be :
560
SSC CHSL 202186)If 8a3 + b3 = 16 and 2a + b = 4, then find the value of 16a4 + b4.
32
SSC CHSL 202187)If \(x^4+{16\over x^4}=27217\), x > 0, then the value of \(\rm x + \frac{2}{x}\) is:
13
SSC CHSL 202188)If \((x+{2\over x})=7\), then what is the value of \(( 2x^2 + \frac{8}{x^2} )\) ?
90
SSC CHSL 202189)If \(({x\over y}+1)=4\), then what is the value of \(( \frac{x^2 + y^2}{y^2})\) ?
10
SSC CHSL 202190)If \(x-3={1\over2x}\), then what is the value of \(( x^4 + \frac{1}{16x^4})\) ?
\(99 \frac{1}{2}\)