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How to Multiplying Monomials?
To multiply monomials: Step 1: Multiply the coefficients. Step 2: Multiply the like variables by adding their exponents. Step 3: Multiply answers from Step 1 and Step 2 together.
Example 1: Evaluate (6a2b4)(5ab3)Solution:(6-5)(a2-a)(b4.b3)(6.5)(a2+1)(b4+3)30a3b7
Example 2: Evaluate . (-10x3y)(2x4y5)Solution: See the animation in the multimedia section.
If the ratios of the polynomial ax 3 +3bx 2 +3cx+d are in AP, Prove that 2b 3 -3abc+a 2 d=0 Ans: Let p(x) = ax 3 + 3bx 2 + 3cx + d and α , β , r are their three Z
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sin(2x+x)=sin2x.cosx+cos2x.sinx =2sinxcosx.cosx+(-2sin^2x)sinx =2sinxcos^2+sinx-2sin^3x =sinx(2cos^2x+1)-2sin^3x =sinx(2-2sin^2x+1)-2sin^3
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