1.

(h) {(3x + 5)+(x+2)}2 + {(3x+5)-(x + 2)2 = 20x2–78​

Answer»

6x+10+2x+4+6x+10-2x-4=20x2-7812x+20=20x2-7820x2-98-12x=0Now this is a SIMPLE QUADRATIC equationThanks



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