Question: Need help Name: Date: Period: Solving Quadratic Equations Using Quadratic Formula Homework Find the discriminant for each quadratic equation. State the number of real roots

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Name: Date: Period: Solving Quadratic Equations Using Quadratic Formula Homework Find the discriminant for each quadratic equation. State the number of real roots and then find the real solution(s), if any exist. 120 3x2 - 9x +7= 0 121. 2x2 - 4x +2=0 122. 5x + 7x2+8=0 123. 7x - 6= 2x2 124. 5x2 = 7x - 6 125 3x2 - 7x - 8=0 126. (x + 3) (2x + 6) = 11 127. Which equation has 2 real solutions? a. 5x2 + 6x - 7 = 0 b. 3x2 + 27 = 18x c. 5x2 - 30x = 20x - 125 d. 3x2 = x - 11 128. Which equation has non-real solutions? a. x2 + 6x - 8= 0 b. x2 + 81 = 18x c. 3x2 + 5x - 4 = 6x d. 3x2 +8=2x -3 Solve the following using the quadratic formula. Leave irrational answers in radical form. 129. x2 +7x - 5=0 130. g2 - 5g + 3 = 0 131. 2d2 + 5d - 3 =0 eamnoue 132. -3m2 + 4m =-5 133. 5w2 - 2 = 5w 134. 3z - 672 = -8

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