Find the value of t such that (5x^2 - 6x + 7)(4x^2 +tx + 10) = 20x^4 -9x^3+ 60x^2 - 39x + 70.
It's 3, trust me
-Vinculum
Consider the coefficient of x^2 on both sides.
\(5(10) + (-6)(t) + 7(4) = 60\\ -6t + 78 = 60\\ t = 3\)
Yeah, Vinculum's answer is correct.