Math, asked by syamalaangel3, 1 month ago

if A= 2x²+3x+5, B=-x²-3x-5 then find 2(A-B)​

Answers

Answered by SakshamKumarthegreat
2

Answer:

\sf\red{The\:given\:function\:is}

\sf\green{f(x — 2)=2x²+3x — 5}

\sf\green{Put\:x — 2 = z}

\sf\green{Then\:x= z +2}

\sf\red{This\:gives}

\sf\green{f(z)= 2(z +2)²+3(z +2) — 5}

\sf\green{f(z)=2(z²+4z +4)+3z +6 — 5}

\sf\green{f(z)=2z² + 8z + 8 + 3z + 1}

\sf\green{f(z)=2z² + 11z + 9}

\sf\green{If\:we\:change\:he\:variable\:to\:x\:we\:get}

\large\fbox\red{f(x)=2x² + 11x + 9\:\:[Ans]}

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