Question 816124
(3t² - 4)²
= (3t² - 4)(3t² - 4) {when squaring a binomial, multiply it by itself}
= 3t²(3t²) + 3t²(-4) - 4(3t²) - 4(-4) {used foil method}
= 9t^4 - 12t² - 12t² + 16 {multiplied through}
= 9t^4 - 24t² + 16 {combined like terms}
<br>For more help from me, visit: <a href = "http://www.algebrahouse.com/" target = "_blank">www.algebrahouse.com</a><br><br><br>