Question

Q1) Add:-

(a) 3x(x+7) + 35x^2 - 11x

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Answer 1

a)

$3x(x + 7) + {35x}^{2} - 11x$

${3x}^{2} + 21x + {35x}^{2} - 11x$

${3x}^{2} + {35x}^{2} + 21x - 11x$

${38x}^{2} + 10x$

a)

$( {3m}^{2} - {2n}^{2} + {7p}^{2} ) + ( { - 6p}^{2} + {4n}^{2} ) + ( {8m}^{2} + {12p}^{2} - {3n}^{2}$

$= {3m}^{2} - {2n}^{2} + {7p}^{2} - {6p}^{2} + {4n}^{2} + {8m}^{2} + {12p}^{2} - {3n}^{2}$

$= {3m }^{2} + {8m}^{2} - {2n}^{2} + {4n}^{2} - {3n}^{2} + {7p}^{2} - {6p}^{2} + {12p}^{2}$

$= {11m}^{2} - {n}^{2} + {13p}^{2}$

hope it helps you..