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Ex 12.3, 7 (ii) - Chapter 12 Class 7 Algebraic Expressions
Last updated at March 30, 2023 by Teachoo
Ex 12.3
Ex 12.3, 1
Ex 12.3, 2 Important
Ex 12.3, 3
Ex 12.3, 4
Ex 12.3, 5 Important
Ex 12.3, 6 (i)
Ex 12.3, 6 (ii) Important
Ex 12.3, 6 (iii)
Ex 12.3, 6 (iv) Important
Ex 12.3, 7 (i) Important
Ex 12.3, 7 (ii) You are here
Ex 12.3, 7 (iii) Important
Ex 12.3, 7 (iv)
Ex 12.3, 7 (v) Important
Ex 12.3, 8 (i)
Ex 12.3, 8 (ii) Important
Ex 12.3, 9 Important
Ex 12.3, 10
Transcript
Ex 12.3, 7 Simplify these expressions and find their values if x = 3, a = –1, b = -2 (ii) 2 – 8x + 4x + 4 2 − 8x + 4x + 4 = x (−8 + 4) + (4 + 2) = x (−4) + 6 = −4x + 6 Putting 𝑥 = 3 = −4(3) + 6 = −12 + 6 = −6
