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2x2 + 5x – 1 + 8x + x2 + 7 – 6x + 3 – 3x2 = …………… A) 7x + 9 B) x – 7 C) x – 9 D) x + 3

Answer»

Correct option is  A) 7x + 9

Correct option is (A) 7x + 9

\(2x^2+5x-1+8x+x^2+7–6x+3–3x^2\)

\(=(2+1-3)x^2+(5+8-6)x+(-1+7+3)\)

\(=0x^2+7x+9\)

= 7x + 9



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