Question

how to solve (4x²-9)(4x²+5)

Answer 1

Answer:

identity : (x + a)(x +b) = x² + (a+b)x + ab

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➝(4x² - 9)(4x² + 5)

➝( 4x²)² + ( -9 + 5)4x² + (-9)(5)

➝16x⁴ - 16x² -45

Answer 2

$\huge\mathcal\color{navy}{AnSwEr!}$

$\small{ }$

$\large\bold\color{navy}{Given:}$

$\large\bold\color{navy}{To~solve~the~equation:}$

$\mathtt{(4x^2-9)(4x^2+5)}$

$\large\bold\color{navy}{Equation~to~be~applied:}$

$\mathtt{(x+a)(x+b)=x^2+(a+b)x+ab}$

$\implies\mathtt{(4x^2)^2+(-9+5)4x^2+(-9×5)}$

$\implies\mathtt{16x^4+(-16x^2)+(-45)}$

$\implies\mathtt{{\underline{\underline{16x^4-16x^2-45}}}}$

$\small{ }$

$\huge\bold\color{navy}{Brainliest~Please!}$