Author: Study Clue

If x+1x=3x+x1=3, value of x2+1x2x2+x21 is A 9 B 5 C 7 D 11 Explanation Square both sides: (x+1x)2=x2+2+1×2=9(x+x1)2=x2+2+x21=9. So

For x=−2x=−2, value of 2×2−3x+12×2−3x+1 is A 9 B 5 C 15 D -15 Explanation Substitute x=−2x=−2: 2(4)−3(−2)+1=8+6+1=152(4)−3(−2)+1=8+6+1=15. Square first,

In the term 7x7x, the coefficient of xx is A x B 7 C 1 D 0 Explanation The coefficient

Which expression is a polynomial in xx with integer exponents A 5/x+15/x+1 B 4×3−2x+94×3−2x+9 C x1/2+3×1/2+3 D 2x−1+72x−1+7 Explanation A

Which statement best describes a polynomial A An equation with equals B A solved value C A graph only D

If (x + 2)(x − 3) = x² − x − 6, the coefficient of x is A 1 B

In the expression −3(2x − 5), the coefficient of x is A 6 B −6 C 3 D −3 Explanation

In the term 0.5x, the numerical coefficient is A 0.5 B 5 C x D 0 Explanation The numerical coefficient

In the term −9p, what is the numerical coefficient A 9 B −9 C p D −p Explanation The numerical

In the term 7x, which part is the numerical coefficient A x B 7x C 7 D 1 Explanation The